Merge commit '44127b15'

* commit '44127b15':
  rtmppkt: Make pkt->data reallocable

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/rtmppkt.c

@@ -396,7 +396,7 @@ int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
                           int timestamp, int size)
 {
     if (size) {
-        pkt->data = av_malloc(size);
+        pkt->data = av_realloc(NULL, size);
         if (!pkt->data)
             return AVERROR(ENOMEM);
     }