diff options
| -rw-r--r-- | gl/lib/heap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gl/lib/heap.c b/gl/lib/heap.c index 027b5cd3c..d7db440d7 100644 --- a/gl/lib/heap.c +++ b/gl/lib/heap.c @@ -93,10 +93,12 @@ heap_insert (struct heap *heap, void *item) void * heap_remove_top (struct heap *heap) { + void *top; + if (heap->count == 0) return NULL; - void *top = heap->array[1]; + top = heap->array[1]; heap->array[1] = heap->array[heap->count--]; heapify_down (heap->array, heap->count, 1, heap->compare); |