message: core: fix printf formatting
diff: @@ -221,8 +221,8 @@ void SystemImpl::process_heartbeat(const mavlink_message_t& message)
  } else {
  const auto new_vehicle_type = static_cast<MAV_TYPE>(heartbeat.type);
  if (heartbeat.autopilot != MAV_AUTOPILOT_INVALID && _vehicle_type != new_vehicle_type) {
  - LogWarn() << "Vehicle type changed! New type: " << heartbeat.type
  - << " Old type: " << static_cast<uint8_t>(_vehicle_type);
  + LogWarn() << "Vehicle type changed (new type: " << static_cast<unsigned>(heartbeat.type)
  + << ", old type: " << static_cast<unsigned>(_vehicle_type) << ")";
  _vehicle_type = new_vehicle_type;
  }
  }
  