QmlProfiler: Add some missing override

Change-Id: I79930e6166617d1635d08dade47390ca5ee27268
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/qmlprofiler/qmlprofilermodelmanager.h

@@ -59,7 +59,7 @@ public:
     typedef std::function<void()> Finalizer;
 
     explicit QmlProfilerModelManager(QObject *parent = nullptr);
-    ~QmlProfilerModelManager();
+    ~QmlProfilerModelManager() override;
 
     State state() const;