fix wrong return value from wmemmove on forward copies

[musl] / src / string / strcasecmp.c

#include <strings.h>
#include <ctype.h>

int strcasecmp(const char *_l, const char *_r)
{
        const unsigned char *l=(void *)_l, *r=(void *)_r;
        for (; *l && *r && (*l == *r || tolower(*l) == tolower(*r)); l++, r++);
        return tolower(*l) - tolower(*r);
}