libavcodec/rv40.c:479: error: Uninitialized Value
  The value read from mb_strong[_] was never initialized.

libavcodec/rv40.c:479:60: 
477.                 }
478.                 // filter top edge of the current macroblock when filtering strength is high
479.                 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] || mb_strong[POS_TOP])){
                                                                ^
480.                     rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
481.                                        clip_cur,
