libavcodec/dv.c:545: error: Uninitialized Value
  The value read from is_field_mode[_] was never initialized.

libavcodec/dv.c:545:19: 
543.                   y_stride = (mb_y == 134) ? (1<<log2_blocksize) :
544.                                              s->picture.linesize[j]<<((!is_field_mode[mb_index])*log2_blocksize);
545.                   linesize = s->picture.linesize[j]<<is_field_mode[mb_index];
                       ^
546.                   (mb++)->    idct_put(c_ptr           , linesize, block); block+=64;
547.                   if (s->sys->bpm == 8) {
