libavcodec/error_resilience.c:643: error: Uninitialized Value
  The value read from fixed[_] was never initialized.

libavcodec/error_resilience.c:643:41: 
641.                         decode_mb(s, ref[j]);
642. 
643.                         if (mb_x > 0 && fixed[mb_xy - 1]) {
                                             ^
644.                             int k;
645.                             for (k = 0; k < 16; k++)
