Quadplane: use vector.xy().length() instead of norm(x,y)

ArduPlane/quadplane.cpp

@@ -3529,7 +3529,7 @@ void QuadPlane::update_throttle_mix(void)
 
         // check for aggressive flight requests - requested roll or pitch angle below 15 degrees
         const Vector3f angle_target = attitude_control->get_att_target_euler_cd();
-        bool large_angle_request = (norm(angle_target.x, angle_target.y) > LAND_CHECK_LARGE_ANGLE_CD);
+        bool large_angle_request = angle_target.xy().length() > LAND_CHECK_LARGE_ANGLE_CD;
 
         // check for large external disturbance - angle error over 30 degrees
         const float angle_error = attitude_control->get_att_error_angle_deg();