Fix deprecation warning about KWindowEffects::enableBlurBehind overload

src/MainWindow.cpp

@@ -877,7 +877,7 @@ void MainWindow::setBlur(bool blur)
     _blurEnabled = blur;
 
     if (!_pluggedController->isKonsolePart()) {
-        KWindowEffects::enableBlurBehind(winId(), blur);
+        KWindowEffects::enableBlurBehind(windowHandle(), blur);
     }
 }
 

src/tests/demo_konsolepart/src/demo_konsolepart.cpp

@@ -59,7 +59,7 @@ demo_konsolepart::demo_konsolepart()
                               Qt::DirectConnection,
                               Q_RETURN_ARG(bool, blurEnabled));
     qWarning()<<"blur enabled: "<<blurEnabled;
-    KWindowEffects::enableBlurBehind(winId(), blurEnabled);
+    KWindowEffects::enableBlurBehind(windowHandle(), blurEnabled);
 }
 
 demo_konsolepart::~demo_konsolepart()