libavcodec/h264_direct.c:314: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:314:20: 
312.                        && h->x264_build>33U))){
313.                 a=b=0;
314.                 if(ref[0] > 0)
                        ^
315.                     a= pack16to32(mv[0][0],mv[0][1]);
316.                 if(ref[1] > 0)
