libavcodec/error_resilience.c:483: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:483:49: 
481.                     if (mb_x + 1 < mb_width  && fixed[mb_xy + 1]         == MV_FROZEN)
482.                         j = 1;
483.                     if (mb_y > 0             && fixed[mb_xy - mb_stride] == MV_FROZEN)
                                                     ^
484.                         j = 1;
485.                     if (mb_y + 1 < mb_height && fixed[mb_xy + mb_stride] == MV_FROZEN)
