fix build

kded/kwin_bridge/dummydecoratedclient.cpp

@@ -195,8 +195,9 @@ void DummyDecoratedClient::requestToggleKeepBelow()
 {
 }
 
-void DummyDecoratedClient::requestShowWindowMenu()
+void DummyDecoratedClient::requestShowWindowMenu(const QRect &rect)
 {
+    Q_UNUSED(rect)
 }
 
 void DummyDecoratedClient::setMaximized(bool maximized)

kded/kwin_bridge/dummydecoratedclient.h

@@ -61,7 +61,7 @@ public:
     void requestToggleShade() override;
     void requestToggleKeepAbove() override;
     void requestToggleKeepBelow() override;
-    void requestShowWindowMenu() override;
+    void requestShowWindowMenu(const QRect &rect) override;
 
     void setMaximized(bool maximized);
     void setActive(bool active);