libavcodec/rv40.c:559: error: Uninitialized Value
  The value read from mb_strong[_] was never initialized.

libavcodec/rv40.c:559:62: 
557.                 }
558.                 // filter left block edge in ordinary mode (with low filtering strength)
559.                 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] || mb_strong[POS_LEFT]))){
                                                                  ^
560.                     if(!i)
561.                         clip_left = (cbp[POS_LEFT] | mvmasks[POS_LEFT]) & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
