libavcodec/decode.c:653: error: Uninitialized Value
  The value read from ret was never initialized.

libavcodec/decode.c:653:9: 
651. 
652. finish:
653.     if (ret == 0) {
             ^
654.         /* if there are any bsfs then assume full packet is always consumed */
655.         if (avctx->codec->bsfs)
