message: add support for concatenated gzip in ZlibInputStream
diff: @@ -255,6 +255,9 @@ Status ZlibInputStream::Inflate() {
  }
  return errors::DataLoss(error_string);
  }
  + if (error == Z_STREAM_END && zlib_options_.window_bits == MAX_WBITS + 16) {
  + inflateReset(z_stream_def_->stream.get());
  + }
  return Status::OK();
  }
  