Fix dcb2571: Missing override keywords

src/misc_gui.cpp

@@ -1003,7 +1003,7 @@ struct QueryStringWindow : public Window
 		}
 	}
 
-	virtual void DrawWidget(const Rect &r, int widget) const
+	void DrawWidget(const Rect &r, int widget) const override
 	{
 		if (widget != WID_QS_WARNING) return;
 

src/network/network_gui.cpp

@@ -2193,7 +2193,7 @@ struct NetworkCompanyPasswordWindow : public Window {
 		}
 	}
 
-	virtual void DrawWidget(const Rect &r, int widget) const
+	void DrawWidget(const Rect &r, int widget) const override
 	{
 		if (widget != WID_NCP_WARNING) return;