libavcodec/rv40.c:496: error: Uninitialized Value
  The value read from mvmasks[_] was never initialized.

libavcodec/rv40.c:496:9: 
494.             clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];
495.         }
496.         y_to_deblock =  cbp[POS_CUR]
             ^
497.                      | (cbp[POS_BOTTOM]     << 16)
498.                      |  mvmasks[POS_CUR]
