libavcodec/interplayvideo.c:534: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:534:17: 
532.             }
533.             for (x = 0; x < 8; x += 2, shifter += 2) {
534.                 pix = P[(flags >> shifter) & 0x03];
                     ^
535.                 *(s->pixel_ptr + x) = pix;
536.                 *(s->pixel_ptr + x + 1) = pix;
