heap: heap_destroy() works on NULL argument

markokr · Apr 30, 2014 · 1497b4c · 1497b4c
1 parent 2c1cb7f
commit 1497b4c
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/usual/heap.c b/usual/heap.c
@@ -126,8 +126,10 @@ struct Heap *heap_create(heap_is_better_f is_better_cb, heap_save_pos_f save_pos
 
 void heap_destroy(struct Heap *h)
 {
-	cx_free(h->cx, h->data);
-	cx_free(h->cx, h);
+	if (h) {
+		cx_free(h->cx, h->data);
+		cx_free(h->cx, h);
+	}
 }
 
 bool heap_reserve(struct Heap *h, unsigned extra)