libavcodec/h264_direct.c:441: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:441:33: 
439.                             if (ref[0] == 0)
440.                                 AV_ZERO32(h->mv_cache[0][scan8[i8 * 4 + i4]]);
441.                             if (ref[1] == 0)
                                     ^
442.                                 AV_ZERO32(h->mv_cache[1][scan8[i8 * 4 + i4]]);
443.                             m++;
