libavformat/mpeg.c:313: error: Uninitialized Value
  The value read from c was never initialized.

libavformat/mpeg.c:313:9: 
311.             break;
312.     }
313.     if ((c & 0xc0) == 0x40) {
             ^
314.         /* buffer scale & size */
315.         avio_r8(s->pb);
