Fix race condition that could cause quit segue to never dismiss

Fixes #1060

app/gui/AppView.qml

@@ -345,7 +345,7 @@ CenteredGridView {
 
         function quitApp() {
             var component = Qt.createComponent("QuitSegue.qml")
-            var params = {"appName": appName}
+            var params = {"appName": appName, "quitRunningAppFn": appModel.quitRunningApp}
             if (segueToStream) {
                 // Store the session and app name if we're going to stream after
                 // successfully quitting the old app.
@@ -358,9 +358,6 @@ CenteredGridView {
             }
 
             stackView.push(component.createObject(stackView, params))
-
-            // Trigger the quit after pushing the quit segue on screen
-            appModel.quitRunningApp()
         }
 
         onAccepted: quitApp()