@@ -72,7 +72,7 @@ static void sample_queue_pop(HintSampleQueue *queue)

     if (queue->len <= 0)

         return;

     if (queue->samples[0].own_data)

-        av_free(queue->samples[0].data);

+        av_freep(&queue->samples[0].data);

     queue->len--;

     memmove(queue->samples, queue->samples + 1, sizeof(HintSample)*queue->len);

 }

@@ -85,7 +85,7 @@ static void sample_queue_free(HintSampleQueue *queue)

     int i;

     for (i = 0; i < queue->len; i++)

         if (queue->samples[i].own_data)

-            av_free(queue->samples[i].data);

+            av_freep(&queue->samples[i].data);

     av_freep(&queue->samples);

     queue->len  = 0;

     queue->size = 0;