navigator move to new uORB::Subscription

src/modules/navigator/precland.h

@@ -43,6 +43,7 @@
 #include <matrix/math.hpp>
 #include <lib/ecl/geo/geo.h>
 #include <px4_module_params.h>
+#include <uORB/Subscription.hpp>
 #include <uORB/topics/landing_target_pose.h>
 
 #include "navigator_mode.h"
@@ -103,7 +104,7 @@ private:
 
 	landing_target_pose_s _target_pose{}; /**< precision landing target position */
 
-	int _target_pose_sub{-1};
+	uORB::Subscription _target_pose_sub{ORB_ID(landing_target_pose)};
 	bool _target_pose_valid{false}; /**< whether we have received a landing target position message */
 	bool _target_pose_updated{false}; /**< wether the landing target position message is updated */