libavformat/flvdec.c:446: error: Uninitialized Value
  The value read from size was never initialized.

libavformat/flvdec.c:446:10: 
444.         return AVERROR(EAGAIN);
445. 
446.     ret= av_get_packet(s->pb, pkt, size);
              ^
447.     if (ret < 0) {
448.         return AVERROR(EIO);
