libavcodec/rv40.c:472: error: Uninitialized Value
  The value read from mb_strong[_] was never initialized.

libavcodec/rv40.c:472:62: 
470.                 }
471.                 // filter left block edge in ordinary mode (with low filtering strength)
472.                 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){
                                                                  ^
473.                     if(!i)
474.                         clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
