AP_Follow: params always use set method

libraries/AP_Follow/AP_Follow.cpp

@@ -446,7 +446,7 @@ void AP_Follow::init_offsets_if_required(const Vector3f &dist_vec_ned)
         // initialise offset in NED frame
         _offset = -dist_vec_ned;
         // ensure offset_type used matches frame of offsets saved
-        _offset_type = AP_FOLLOW_OFFSET_TYPE_NED;
+        _offset_type.set(AP_FOLLOW_OFFSET_TYPE_NED);
         gcs().send_text(MAV_SEVERITY_INFO, "N-E-D follow offset loaded");
     }
 }

libraries/AP_Follow/AP_Follow.h

@@ -48,7 +48,7 @@ public:
     bool enabled() const { return _enabled; }
 
     // set which target to follow
-    void set_target_sysid(uint8_t sysid) { _sysid = sysid; }
+    void set_target_sysid(uint8_t sysid) { _sysid.set(sysid); }
 
     // restore offsets to zero if necessary, should be called when vehicle exits follow mode
     void clear_offsets_if_required();