libavcodec/h264_direct.c:364: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:364:32: 
362.                         const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
363.                         if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
364.                             if(ref[0] == 0)
                                    ^
365.                                 AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
366.                             if(ref[1] == 0)
