Plane: limit ATC_MOT_MIX_MAX in case of a fly away

ArduPlane/quadplane.cpp

@@ -1567,7 +1567,7 @@ void QuadPlane::update_transition(void)
         plane.rollController.reset_I();
 
         // give full authority to attitude control
-        attitude_control->set_throttle_mix_max();
+        attitude_control->set_throttle_mix_max(1.0f);
         break;
     }
         
@@ -3099,7 +3099,7 @@ void QuadPlane::update_throttle_thr_mix(void)
         bool descent_not_demanded = pos_control->get_desired_velocity().z >= 0.0f;
 
         if ( large_angle_request || large_angle_error || accel_moving || descent_not_demanded) {
-            attitude_control->set_throttle_mix_max();
+            attitude_control->set_throttle_mix_max(1.0);
         } else {
             attitude_control->set_throttle_mix_min();
         }