libavcodec/vc1_parser.c:205: error: Uninitialized Value
  The value read from b was never initialized.

libavcodec/vc1_parser.c:205:33: 
203.                 else if (pic_found && b != (VC1_CODE_FIELD & 0xFF) && b != (VC1_CODE_SLICE & 0xFF)) {
204.                     next = i - 4;
205.                     pic_found = b == (VC1_CODE_FRAME & 0xFF);
                                     ^
206.                     break;
207.                 }
