libavcodec/mss4.c:454: error: Uninitialized Value
  The value read from vec_len[_] was never initialized.

libavcodec/mss4.c:454:37: 
452.                 for (i = 0; i < 3; i++) {
453.                     for (k = 0; k < split; k++) {
454.                         *dst[i]++ = get_value_cached(gb, vals[i], vec[i],
                                         ^
455.                                                      vec_len[i], i, val_shift,
456.                                                      prev_pix);
