libavfilter/af_compand.c:322: error: Uninitialized Value
  The value read from dindex was never initialized.

libavfilter/af_compand.c:322:5: 
320.     }
321.     s->delay_count -= frame->nb_samples;
322.     s->delay_index = dindex;
         ^
323. 
324.     return ff_filter_frame(outlink, frame);
