MAJOR: acl: remove fetch argument validation from the ACL struct

ACL fetch being inherited from the sample fetch keyword, we don't need
anymore to specify what function to use to validate the fetch arguments.

Note that the job is still done in the ACL parsing code based on elements
from the sample fetch structs.
diff --git a/include/types/acl.h b/include/types/acl.h
index 3e62ae2..bb5ad0d 100644
--- a/include/types/acl.h
+++ b/include/types/acl.h
@@ -237,7 +237,6 @@
 	int (*parse)(const char **text, struct acl_pattern *pattern, int *opaque, char **err);
 	int (*match)(struct sample *smp, struct acl_pattern *pattern);
 	unsigned int requires;   /* bit mask of all ACL_USE_* required to evaluate this keyword */
-	int (*val_args)(struct arg *arg_p, char **err_msg);  /* argument validation function */
 	/* must be after the config params */
 	struct sample_fetch *smp; /* the sample fetch we depend on */
 	int use_cnt;
diff --git a/src/acl.c b/src/acl.c
index a996c63..2e23e30 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -1052,7 +1052,7 @@
 			if (!expr->args)
 				expr->args = empty_arg_list;
 
-			if (aclkw->val_args && !aclkw->val_args(expr->args, err)) {
+			if (aclkw->smp->val_args && !aclkw->smp->val_args(expr->args, err)) {
 				/* invalid keyword argument, error must have been
 				 * set by val_args().
 				 */
diff --git a/src/payload.c b/src/payload.c
index 34b21ed..25145cd 100644
--- a/src/payload.c
+++ b/src/payload.c
@@ -669,8 +669,8 @@
  * Please take care of keeping this list alphabetically sorted.
  */
 static struct acl_kw_list acl_kws = {{ },{
-	{ "payload",            NULL,             acl_parse_str,        acl_match_str,     ACL_USE_L6REQ_VOLATILE, val_payload },
-	{ "payload_lv",         NULL,             acl_parse_str,        acl_match_str,     ACL_USE_L6REQ_VOLATILE, val_payload_lv },
+	{ "payload",            NULL,             acl_parse_str,        acl_match_str,     ACL_USE_L6REQ_VOLATILE },
+	{ "payload_lv",         NULL,             acl_parse_str,        acl_match_str,     ACL_USE_L6REQ_VOLATILE },
 	{ "rep_ssl_hello_type", NULL,             acl_parse_int,        acl_match_int,     ACL_USE_L6RTR_VOLATILE },
 	{ "req_len",            NULL,             acl_parse_int,        acl_match_int,     ACL_USE_L6REQ_VOLATILE },
 	{ "req_rdp_cookie",     "rdp_cookie",     acl_parse_str,        acl_match_str,     ACL_USE_L6REQ_VOLATILE },
diff --git a/src/proto_http.c b/src/proto_http.c
index a835fdc..020009a 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -9542,17 +9542,17 @@
 	{ "cook_sub",        "cook",          acl_parse_str,     acl_match_sub,     ACL_USE_L7REQ_VOLATILE },
 	{ "cook_val",        "cook_val",      acl_parse_int,     acl_match_int,     ACL_USE_L7REQ_VOLATILE },
 
-	{ "hdr",             "hdr",           acl_parse_str,     acl_match_str,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_beg",         "hdr",           acl_parse_str,     acl_match_beg,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_cnt",         "hdr_cnt",       acl_parse_int,     acl_match_int,     ACL_USE_L7REQ_VOLATILE          },
-	{ "hdr_dir",         "hdr",           acl_parse_str,     acl_match_dir,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_dom",         "hdr",           acl_parse_str,     acl_match_dom,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_end",         "hdr",           acl_parse_str,     acl_match_end,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_ip",          "hdr_ip",        acl_parse_ip,      acl_match_ip,      ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_len",         "hdr",           acl_parse_int,     acl_match_len,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_reg",         "hdr",           acl_parse_reg,     acl_match_reg,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_sub",         "hdr",           acl_parse_str,     acl_match_sub,     ACL_USE_L7REQ_VOLATILE, val_hdr },
-	{ "hdr_val",         "hdr_val",       acl_parse_int,     acl_match_int,     ACL_USE_L7REQ_VOLATILE, val_hdr },
+	{ "hdr",             "hdr",           acl_parse_str,     acl_match_str,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_beg",         "hdr",           acl_parse_str,     acl_match_beg,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_cnt",         "hdr_cnt",       acl_parse_int,     acl_match_int,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_dir",         "hdr",           acl_parse_str,     acl_match_dir,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_dom",         "hdr",           acl_parse_str,     acl_match_dom,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_end",         "hdr",           acl_parse_str,     acl_match_end,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_ip",          "hdr_ip",        acl_parse_ip,      acl_match_ip,      ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_len",         "hdr",           acl_parse_int,     acl_match_len,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_reg",         "hdr",           acl_parse_reg,     acl_match_reg,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_sub",         "hdr",           acl_parse_str,     acl_match_sub,     ACL_USE_L7REQ_VOLATILE },
+	{ "hdr_val",         "hdr_val",       acl_parse_int,     acl_match_int,     ACL_USE_L7REQ_VOLATILE },
 
 	{ "http_auth",       NULL,            acl_parse_nothing, acl_match_nothing, ACL_USE_L7REQ_VOLATILE },
 	{ "http_auth_group", NULL,            acl_parse_strcat,  acl_match_auth,    ACL_USE_L7REQ_VOLATILE },
@@ -9585,17 +9585,17 @@
 	{ "scook_sub",       "scook",         acl_parse_str,     acl_match_sub,     ACL_USE_L7RTR_VOLATILE },
 	{ "scook_val",       "scook_val",     acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_VOLATILE },
 
-	{ "shdr",            "shdr",          acl_parse_str,     acl_match_str,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_beg",        "shdr",          acl_parse_str,     acl_match_beg,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_cnt",        "shdr_cnt",      acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_VOLATILE          },
-	{ "shdr_dir",        "shdr",          acl_parse_str,     acl_match_dir,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_dom",        "shdr",          acl_parse_str,     acl_match_dom,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_end",        "shdr",          acl_parse_str,     acl_match_end,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_ip",         "shdr_ip",       acl_parse_ip,      acl_match_ip,      ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_len",        "shdr",          acl_parse_int,     acl_match_len,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_reg",        "shdr",          acl_parse_reg,     acl_match_reg,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_sub",        "shdr",          acl_parse_str,     acl_match_sub,     ACL_USE_L7RTR_VOLATILE, val_hdr },
-	{ "shdr_val",        "shdr_val",      acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_VOLATILE, val_hdr },
+	{ "shdr",            "shdr",          acl_parse_str,     acl_match_str,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_beg",        "shdr",          acl_parse_str,     acl_match_beg,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_cnt",        "shdr_cnt",      acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_dir",        "shdr",          acl_parse_str,     acl_match_dir,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_dom",        "shdr",          acl_parse_str,     acl_match_dom,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_end",        "shdr",          acl_parse_str,     acl_match_end,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_ip",         "shdr_ip",       acl_parse_ip,      acl_match_ip,      ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_len",        "shdr",          acl_parse_int,     acl_match_len,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_reg",        "shdr",          acl_parse_reg,     acl_match_reg,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_sub",        "shdr",          acl_parse_str,     acl_match_sub,     ACL_USE_L7RTR_VOLATILE },
+	{ "shdr_val",        "shdr_val",      acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_VOLATILE },
 
 	{ "status",          NULL,            acl_parse_int,     acl_match_int,     ACL_USE_L7RTR_PERMANENT },