ClangFormat: Fix crash on exit

Was introduced in 0e5c7f51fa with the page being deleted
to remove it from the global list of pages.

Change-Id: Ia13f7ab74d85b5b8c66f1b20e33d97c29ce3e8f1
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/plugins/cpptools/cpptoolsplugin.cpp b/src/plugins/cpptools/cpptoolsplugin.cpp
index 02e695e534..a844c6bb30 100644
--- a/src/plugins/cpptools/cpptoolsplugin.cpp
+++ b/src/plugins/cpptools/cpptoolsplugin.cpp
@@ -95,14 +95,15 @@ public:
         StringTable::destroy();
         delete m_cppFileSettingsPage;
         delete m_cppCodeModelSettingsPage;
-        delete m_cppCodeStyleSettingsPage;
+        if (m_cppCodeStyleSettingsPage)
+            delete m_cppCodeStyleSettingsPage;
     }
 
     QSharedPointer<CppCodeModelSettings> m_codeModelSettings;
     CppToolsSettings *m_settings = nullptr;
     CppFileSettingsPage *m_cppFileSettingsPage = nullptr;
     CppCodeModelSettingsPage *m_cppCodeModelSettingsPage = nullptr;
-    CppCodeStyleSettingsPage *m_cppCodeStyleSettingsPage = nullptr;
+    QPointer<CppCodeStyleSettingsPage> m_cppCodeStyleSettingsPage = nullptr;
 };
 
 CppToolsPlugin::CppToolsPlugin()