slightly cleaner strlen, also seems to compile to better code

[musl] / src / string / strlcat.c

#define _BSD_SOURCE
#include <string.h>

size_t strlcat(char *d, const char *s, size_t n)
{
        size_t l = strnlen(d, n);
        if (l == n) return l + strlen(s);
        return l + strlcpy(d+l, s, n-l);
}