libavcodec/h264_direct.c:320: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264_direct.c:320:20: 
318.                        && h->x264_build>33U))){
319.                 a=b=0;
320.                 if(ref[0] > 0)
                        ^
321.                     a= mv[0];
322.                 if(ref[1] > 0)
