libavformat/mpeg.c:311: error: Uninitialized Value
  The value read from c was never initialized.

libavformat/mpeg.c:311:16: 
309.             len -= 5;
310.         }
311.     } else if ((c & 0xc0) == 0x80) {
                    ^
312.         /* mpeg 2 PES */
313.         flags      = avio_r8(s->pb);
