[CLEANUP] shut warnings 'is*' macros from ctype.h on solaris
Solaris visibly uses an array for is*, which returns warnings
about the use of signed chars as indexes. Good opportunity to
put casts everywhere.
diff --git a/src/acl.c b/src/acl.c
index a474460..f7ac06c 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -324,7 +324,7 @@
const char *ptr = *text;
- while (!isdigit(*ptr)) {
+ while (!isdigit((unsigned char)*ptr)) {
if (strcmp(ptr, "eq") == 0) *opaque = 0;
else if (strcmp(ptr, "gt") == 0) *opaque = 1;
else if (strcmp(ptr, "ge") == 0) *opaque = 2;