Clang: Rebuild overview model tree when token data is updated

In release builds overview model tree is built earlier
then the job with token information is completed.

Change-Id: I1a563551e813996001fb97924ac441e2b7d599b9
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cpptools/cppeditoroutline.cpp

@@ -133,6 +133,8 @@ CppEditorOutline::CppEditorOutline(TextEditor::TextEditorWidget *editorWidget)
     m_updateTimer = newSingleShotTimer(this, UpdateOutlineIntervalInMs,
                                        QLatin1String("CppEditorOutline::m_updateTimer"));
     connect(m_updateTimer, &QTimer::timeout, this, &CppEditorOutline::updateNow);
+    connect(m_model.get(), &CppTools::AbstractOverviewModel::needsUpdate, this,
+            &CppEditorOutline::updateNow);
 
     m_updateIndexTimer = newSingleShotTimer(this, UpdateOutlineIntervalInMs,
                                             QLatin1String("CppEditorOutline::m_updateIndexTimer"));