libavcodec/decode.c:663: error: Uninitialized Value
  The value read from ret was never initialized.

libavcodec/decode.c:663:5: 
661.     avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
662. 
663.     return ret;
         ^
664. }
665. 
