ext/array.c in redcarpet-1.2.2 vs ext/array.c in redcarpet-1.3.0

@@ -209,10 +209,10 @@
 /* parr_insert • inserting nb elements before the nth one */
 int
 parr_insert(struct parray *parr, int nb, int n) {
 	char *src, *dst;
 	size_t len, i;
-	if (!parr || nb == 0 || n < 0
+	if (!parr || nb <= 0 || n < 0
 	|| !parr_grow(parr, parr->size + nb))
 		return 0;
 	if (n < parr->size) {
 		src = (void *)parr->item;
 		src += n * sizeof (void *);