libavcodec/error_resilience.c:491: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:491:49: 
489. 
490.                     j = 0;
491.                     if (mb_x > 0             && fixed[mb_xy - 1        ] == MV_CHANGED)
                                                     ^
492.                         j = 1;
493.                     if (mb_x + 1 < mb_width  && fixed[mb_xy + 1        ] == MV_CHANGED)
