libavcodec/error_resilience.c:495: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:495:49: 
493.                     if (mb_x + 1 < mb_width  && fixed[mb_xy + 1        ] == MV_CHANGED)
494.                         j = 1;
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)
