store/loader_file.c: fix char-subscripts warning.
This happens on systems that perform is* character classifictions as
array lookup, e.g. NetBSD.
@@ -1216,9 +1216,9 @@ static int file_name_check(OSSL_STORE_LOADER_CTX *ctx, const char *name)
* Last, check that the rest of the extension is a decimal number, at
* least one digit long.
*/
- if (!isdigit(*p))
+ if (!ossl_isdigit(*p))
return 0;
- while (isdigit(*p))
+ while (ossl_isdigit(*p))
p++;
# ifdef __VMS
@@ -1227,7 +1227,7 @@ static int file_name_check(OSSL_STORE_LOADER_CTX *ctx, const char *name)
*/
if (*p == ';')
for (p++; *p != '\0'; p++)
- if (!isdigit(*p))
+ if (!ossl_isdigit(*p))
break;
# endif
