libavcodec/interplayvideo.c:417: error: Uninitialized Value
  The value read from P[_] was never initialized.

libavcodec/interplayvideo.c:417:17: 
415. 
416.             for (x = 0; x < 4; x++, flags >>= 2)
417.                 *s->pixel_ptr++ = P[flags & 0x03];
                     ^
418. 
419.             s->pixel_ptr += s->stride - 4;
