Merge commit 'dbb43b8b'

* commit 'dbb43b8b':
  avpacket: properly reset data/size in av_packet_move_ref()
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

libavcodec/avpacket.c

@@ -599,6 +599,8 @@ void av_packet_move_ref(AVPacket *dst, AVPacket *src)
 {
     *dst = *src;
     av_init_packet(src);
+    src->data = NULL;
+    src->size = 0;
 }
 
 void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)