Fix some memory leaks

Task-number: QTCREATORBUG-7645

Change-Id: I34253d063a20ebf927bf651cf68af4fe1b71bc89
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/texteditor/codestylepool.cpp

@@ -54,6 +54,7 @@ public:
     CodeStylePoolPrivate()
         : m_factory(0)
     {}
+    ~CodeStylePoolPrivate();
 
     QString generateUniqueId(const QString &id) const;
 
@@ -65,6 +66,11 @@ public:
     QString m_settingsPath;
 };
 
+CodeStylePoolPrivate::~CodeStylePoolPrivate()
+{
+    delete m_factory;
+}
+
 QString CodeStylePoolPrivate::generateUniqueId(const QString &id) const
 {
     if (!id.isEmpty() && !m_idToCodeStyle.contains(id))