libavcodec/h264_direct.c:307: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:307:13: 
305.             int a,b;
306. 
307.             fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
                 ^
308.             fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
309.             if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref
