QmlProfiler: Fix memory leak

Detected by valgrind

Change-Id: I505e8dec83a0c9d3be648e43d9886debeb2a5b3b
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>

src/plugins/qmlprofiler/qmlprofilerbasemodel.cpp

@@ -36,7 +36,9 @@ namespace QmlProfiler {
 
 QmlProfilerBaseModel::QmlProfilerBaseModel(Utils::FileInProjectFinder *fileFinder,
                                            QmlProfilerModelManager *manager,
-                                           QmlProfilerBaseModelPrivate *dd) : d_ptr(dd)
+                                           QmlProfilerBaseModelPrivate *dd)
+    : QObject(manager)
+    , d_ptr(dd)
 {
     Q_D(QmlProfilerBaseModel);
     d->modelManager = manager;