From 7155a10bb73535bc8df9483ec45efbaaf263ddea Mon Sep 17 00:00:00 2001
From: Thomas Hartmann <thomas.hartmann@qt.io>
Date: Mon, 3 Jul 2017 12:37:16 +0200
Subject: [PATCH] QmlDesigner: Fix potential crash

Ensure the navigator is not crashing if no model is attached.

Task-number: QTCREATORBUG-18420
Change-Id: I2748e61d34621167ff5908409046f8171ff76c85
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
---
 .../qmldesigner/components/navigator/navigatortreemodel.cpp    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
index 8740a3d7937..142127c6c28 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
+++ b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
@@ -331,6 +331,9 @@ ModelNode NavigatorTreeModel::modelNodeForIndex(const QModelIndex &index) const
     if (!index.isValid())
         return ModelNode();
 
+    if (!m_view->model())
+        return ModelNode();
+
     return m_view->modelNodeForInternalId(index.internalId());
 }