AAPT2: better error handling for daemon mode

    std::vector<StringPiece> args;

    args.insert(args.end(), token_iter, tokenizer.end());

    ExecuteCommand(command, args, diagnostics);

    std::cout << "Done" << std::endl;

    int ret = ExecuteCommand(command, args, diagnostics);

    if (ret != 0) {

      std::cerr << "Error" << std::endl;

    }

    std::cerr << "Done" << std::endl;

  }

  std::cout << "Exiting daemon" << std::endl;

}