libavcodec/h264_direct.c:449: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:449:33: 
447.                             if (ref[0] == 0)
448.                                 AV_ZERO32(sl->mv_cache[0][scan8[i8 * 4 + i4]]);
449.                             if (ref[1] == 0)
                                     ^
450.                                 AV_ZERO32(sl->mv_cache[1][scan8[i8 * 4 + i4]]);
451.                             m++;
