libavformat/mpeg.c:359: error: Uninitialized Value
  The value read from c was never initialized.

libavformat/mpeg.c:359:16: 
357.             goto error_redo;
358.         avio_skip(s->pb, header_len);
359.     } else if (c != 0xf)
                    ^
360.         goto redo;
361. 
