message: example: move printf to correct location
diff: @@ -123,7 +123,6 @@ int main(int /*argc*/, char ** /*argv*/)
  device.mission().send_mission_async(
  mission_items, [prom](Mission::Result result) {
  prom->set_value(result);
  - std::cout << "Mission uploaded." << std::endl;
  });
  const Mission::Result result = future_result.get();
  @@ -131,6 +130,7 @@ int main(int /*argc*/, char ** /*argv*/)
  std::cout << "Mission upload failed (" << Mission::result_str(result) << "), exiting." << std::endl;
  return 1;
  }
  + std::cout << "Mission uploaded." << std::endl;
  }
  std::cout << "Arming..." << std::endl;
  