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

libavcodec/rv40.c:472:37: 
470.                         clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;
471.                     else
472.                         clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;
                                         ^
473.                     rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,
474.                                               clip_cur,
