Copter: minor format fix to landing-gear update function

ArduCopter/landing_gear.cpp

@@ -13,7 +13,7 @@ void Copter::landinggear_update(){
         // if we are doing an automatic landing procedure, force the landing gear to deploy.
         // To-Do: should we pause the auto-land procedure to give time for gear to come down?
         if (control_mode == LAND ||
-           (control_mode==RTL && (rtl_state == RTL_LoiterAtHome || rtl_state == RTL_Land || rtl_state == RTL_FinalDescent)) ||
+           (control_mode == RTL && (rtl_state == RTL_LoiterAtHome || rtl_state == RTL_Land || rtl_state == RTL_FinalDescent)) ||
            (control_mode == AUTO && auto_mode == Auto_Land) ||
            (control_mode == AUTO && auto_mode == Auto_RTL && (rtl_state == RTL_LoiterAtHome || rtl_state == RTL_Land || rtl_state == RTL_FinalDescent))) {
             landinggear.force_deploy(true);