Update BasePropDoor.h protected virtual

Author: connman116

src/game/server/BasePropDoor.h

@@ -154,6 +154,7 @@ abstract_class CBasePropDoor : public CDynamicProp
 
 	void DoorOpenMoveDone();
 	void DoorCloseMoveDone();
+	protected:
 	virtual void DoorAutoCloseThink();
 
 	void Lock();