libavcodec/rv40.c:458: error: Uninitialized Value
  The value read from clip[_] was never initialized.

libavcodec/rv40.c:458:33: 
456.                 // filter left block edge in edge mode (with high filtering strength)
457.                 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] || mb_strong[POS_LEFT])){
458.                     clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
                                     ^
459.                     r->rdsp.rv40_v_loop_filter(Y, s->linesize, dither,
460.                                        clip_cur,
