QmlProfiler: fix potential crash

fixes Ib2ea66bd5694046577a0b5a0e2f611f3ffba0238

Change-Id: Ib7a4e02391513984f1c81a43a5fab490b7f88923
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/qmlprofiler/localqmlprofilerrunner.h

@@ -52,6 +52,7 @@ public:
     };
 
     explicit LocalQmlProfilerRunner(const Configuration &configuration, QObject *parent = 0);
+    ~LocalQmlProfilerRunner();
 
     // AbstractQmlProfilerRunner
     virtual void start();