fix wrong return value from wmemmove on forward copies

[musl] / src / string / wmemmove.c

#include <string.h>
#include <wchar.h>

wchar_t *wmemmove(wchar_t *d, const wchar_t *s, size_t n)
{
        wchar_t *d0 = d;
        if ((size_t)(d-s) < n)
                while (n--) d[n] = s[n];
        else
                while (n--) *d++ = *s++;
        return d0;
}