libavcodec/error_resilience.c:701: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:701:17: 
699.         for (i = 0; i < s->mb_num; i++) {
700.             int mb_xy = s->mb_index2xy[i];
701.             if (fixed[mb_xy])
                     ^
702.                 fixed[mb_xy] = MV_FROZEN;
703.         }
