libavcodec/h264_refs.c:522: error: Uninitialized Value
  The value read from pic was never initialized.

libavcodec/h264_refs.c:522:5: 
520.     int i, av_uninit(j);
521.     int current_ref_assigned=0, err=0;
522.     Picture *av_uninit(pic);
         ^
523. 
524.     if((h->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
