Plane: Ensure that only one form of throttle nudging is active at once

ArduPlane/radio.cpp

@@ -186,6 +186,8 @@ void Plane::read_radio()
 
     control_failsafe();
 
+    airspeed_nudge_cm = 0;
+    throttle_nudge = 0;
     if (g.throttle_nudge && channel_throttle->get_control_in() > 50 && geofence_stickmixing()) {
         float nudge = (channel_throttle->get_control_in() - 50) * 0.02f;
         if (ahrs.airspeed_sensor_enabled()) {
@@ -193,9 +195,6 @@ void Plane::read_radio()
         } else {
             throttle_nudge = (aparm.throttle_max - aparm.throttle_cruise) * nudge;
         }
-    } else {
-        airspeed_nudge_cm = 0;
-        throttle_nudge = 0;
     }
 
     rudder_arm_disarm_check();