Use function pointer instead of name

Author: TheOneRing

src/gui/owncloudsetupwizard.cpp

@@ -112,7 +112,7 @@ void OwncloudSetupWizard::slotCheckServer(const QString &urlString)
         // We want to reset the QNAM proxy so that the global proxy settings are used (via ClientProxy settings)
         account->networkAccessManager()->setProxy(QNetworkProxy(QNetworkProxy::DefaultProxy));
         // use a queued invocation so we're as asynchronous as with the other code path
-        QMetaObject::invokeMethod(this, "slotFindServer", Qt::QueuedConnection);
+        QMetaObject::invokeMethod(this, &OwncloudSetupWizard::slotFindServer, Qt::QueuedConnection);
     }
 }