Fix loading existing windows when starting

Signed-off-by: Juraj Oravec <jurajoravec@mailo.com>

qml/extensions/qml_tutorial_9/main.qml

@@ -28,7 +28,7 @@ Falkon.PluginInterface {
             for (var i = 0; i < windowsAll.length; ++i) {
                 objectTutorial9.windows.append({
                     "id": windowsAll[i].id.toString(),
-                    "window": window,
+                    "window": windowsAll[i],
                     "check": false
                 })
             }