MINOR: action: Add function to check rules using an action ACT_ACTION_TRK_*

The function "check_trk_action" has been added to find and check the target
table for rules using an action ACT_ACTION_TRK_*.
diff --git a/src/proto_http.c b/src/proto_http.c
index 23f683c..3c37ade 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -8404,6 +8404,7 @@
 		}
 		rule->arg.trk_ctr.expr = expr;
 		rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
+		rule->check_ptr = check_trk_action;
 	} else if (strcmp(args[0], "redirect") == 0) {
 		struct redirect_rule *redir;
 		char *errmsg = NULL;
@@ -9008,6 +9009,7 @@
 		}
 		rule->arg.trk_ctr.expr = expr;
 		rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
+		rule->check_ptr = check_trk_action;
 	} else if (((custom = action_http_res_custom(args[0])) != NULL)) {
 		char *errmsg = NULL;
 		cur_arg = 1;