[liba] Improve strlcpy

Use memcpy (can be optimized) and return the correct size

liba/src/strlcpy.c

@@ -1,17 +1,12 @@
 #include <string.h>
 
 size_t strlcpy(char * dst, const char * src, size_t dstSize) {
-  if (dstSize == 0) {
-    return strlen(src);
+  const size_t srcLen = strlen(src);
+  if (srcLen+1 < dstSize) {
+    memcpy(dst, src, srcLen+1);
+  } else if (dstSize != 0) {
+    memcpy(dst, src, dstSize-1);
+    dst[dstSize-1] = 0;
   }
-  const char * cur = src;
-  const char * end = src+dstSize-1;
-  while (*cur != 0 && cur < end) {
-    *dst++ = *cur++;
-  }
-  *dst = 0;
-  while (*cur != 0) {
-    cur++;
-  }
-  return cur-src;
+  return srcLen;
 }