land_detector: move _parameterSub to the right place

src/modules/land_detector/LandDetector.cpp

@@ -105,6 +105,7 @@ void LandDetector::_cycle()
 
 		// Initialize uORB topics.
 		_armingSub = orb_subscribe(ORB_ID(actuator_armed));
+		_parameterSub = orb_subscribe(ORB_ID(parameter_update));
 		_initialize_topics();
 
 		_check_params(true);

src/modules/land_detector/LandDetector.h

@@ -150,9 +150,6 @@ protected:
 	orb_advert_t _landDetectedPub{nullptr};
 	vehicle_land_detected_s _landDetected{};
 
-	int _parameterSub{-1};
-	int _armingSub{-1};
-
 	LandDetectionState _state{LandDetectionState::LANDED};
 
 	systemlib::Hysteresis _freefall_hysteresis{false};
@@ -181,6 +178,9 @@ private:
 	perf_counter_t	_cycle_perf;
 
 	bool _previous_arming_state{false}; ///< stores the previous _arming.armed state
+
+	int _parameterSub{-1};
+	int _armingSub{-1};
 };
 
 

src/modules/land_detector/MulticopterLandDetector.cpp

@@ -97,7 +97,6 @@ void MulticopterLandDetector::_initialize_topics()
 	_vehicleLocalPositionSetpointSub = orb_subscribe(ORB_ID(vehicle_local_position_setpoint));
 	_attitudeSub = orb_subscribe(ORB_ID(vehicle_attitude));
 	_actuatorsSub = orb_subscribe(ORB_ID(actuator_controls_0));
-	_parameterSub = orb_subscribe(ORB_ID(parameter_update));
 	_sensor_bias_sub = orb_subscribe(ORB_ID(sensor_bias));
 	_vehicle_control_mode_sub = orb_subscribe(ORB_ID(vehicle_control_mode));
 	_battery_sub = orb_subscribe(ORB_ID(battery_status));