libavcodec/rv40.c:483: error: Uninitialized Value
  The value read from mb_strong[_] was never initialized.

libavcodec/rv40.c:483:60: 
481.                 }
482.                 // filter top edge of the current macroblock when filtering strength is high
483.                 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){
                                                                ^
484.                     rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
485.                                        clip_cur,
