libavcodec/h264_direct.c:250: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:250:9: 
248.     if (!(is_b8x8 | mv[0] | mv[1])) {
249.         fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
250.         fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
             ^
251.         fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
252.         fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
