string: tidy up strndup()
It decreases code size:
text data bss dec hex filename
161 0 0 161 a1 strndup-BEFORE.o
153 0 0 153 99 strndup-AFTER.o
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
diff --git a/libc/string/strndup.c b/libc/string/strndup.c
index da9a55f..9dca79c 100644
--- a/libc/string/strndup.c
+++ b/libc/string/strndup.c
@@ -31,12 +31,14 @@
char* strndup(const char* s, size_t n)
{
size_t slen = (size_t)strlen(s);
- int len = slen < n ? slen : n;
- char* copy = malloc(len+1);
+ char* copy;
+ if (slen < n)
+ n = slen;
+ copy = malloc(n+1);
if (copy) {
- memcpy( copy, s, len );
- copy[len] = 0;
+ memcpy(copy, s, n);
+ copy[n] = 0;
}
return copy;
}