libavformat/flvdec.c:431: error: Uninitialized Value
  The value read from size was never initialized.

libavformat/flvdec.c:431:10: 
429.     }
430. 
431.     ret= av_get_packet(s->pb, pkt, size);
              ^
432.     if (ret < 0) {
433.         return AVERROR(EIO);
