[shell/panelconfigview] Port old-style connect

Test Plan: Compiles

Reviewers: #plasma, apol

Reviewed By: apol

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D23509

shell/panelconfigview.cpp

@@ -51,7 +51,7 @@ PanelConfigView::PanelConfigView(Plasma::Containment *containment, PanelView *pa
 
     setScreen(panelView->screen());
 
-    connect(panelView, SIGNAL(screenChanged(QScreen *)), &m_screenSyncTimer, SLOT(start()));
+    connect(panelView, &QWindow::screenChanged, &m_screenSyncTimer, QOverload<>::of(&QTimer::start));
     m_screenSyncTimer.setSingleShot(true);
     m_screenSyncTimer.setInterval(150);
     connect(&m_screenSyncTimer, &QTimer::timeout,