libavcodec/dvdec.c:301: error: Uninitialized Value
  The value read from is_field_mode[_] was never initialized.

libavcodec/dvdec.c:301:19: 
299.                   y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
300.                                              s->frame->linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
301.                   linesize = s->frame->linesize[j] << is_field_mode[mb_index];
                       ^
302.                   (mb++)->    idct_put(c_ptr           , linesize, block); block += 64;
303.                   if (s->sys->bpm == 8) {
