libavcodec/h264_direct.c:376: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:376:9: 
374.         int a, b;
375. 
376.         fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
             ^
377.         fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
378.         if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref &&
