Marked sdl_handler::draw overrides as final

src/display.hpp

@@ -855,7 +855,7 @@ protected:
 	 *
 	 * Inherited from events::sdl_handler.
 	 */
-	virtual void draw() override;
+	virtual void draw() override final;
 
 	/**
 	 * Called at the beginning of each draw cycle.

src/gui/core/event/handler.cpp

@@ -139,7 +139,7 @@ private:
 	void raw_event(const SDL_Event &event);
 
 	/** Fires a draw event. */
-	virtual void draw() override;
+	virtual void draw() override final;
 
 	/**
 	 * Fires a video resize event.