global: use static method to construct AP_ADSB

ArduCopter/Copter.h

@@ -598,7 +598,7 @@ private:
     AC_InputManager_Heli input_manager = AC_InputManager_Heli::create();
 #endif
 
-    AP_ADSB adsb {ahrs};
+    AP_ADSB adsb = AP_ADSB::create(ahrs);
 
     // avoidance of adsb enabled vehicles (normally manned vheicles)
     AP_Avoidance_Copter avoidance_adsb{ahrs, adsb};

ArduPlane/Plane.h

@@ -622,7 +622,7 @@ private:
         FUNCTOR_BIND_MEMBER(&Plane::disarm_if_autoland_complete, void),
         FUNCTOR_BIND_MEMBER(&Plane::update_flight_stage, void)};
 
-    AP_ADSB adsb {ahrs};
+    AP_ADSB adsb = AP_ADSB::create(ahrs);
 
     // avoidance of adsb enabled vehicles (normally manned vheicles)
     AP_Avoidance_Plane avoidance_adsb {ahrs, adsb};