libavcodec/error_resilience.c:497: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:497:49: 
495.                     if (mb_y > 0             && fixed[mb_xy - mb_stride] == MV_CHANGED)
496.                         j = 1;
497.                     if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_CHANGED)
                                                     ^
498.                         j = 1;
499.                     if (j == 0 && pass > 1)
