Debugger: Set model object names at construction time

Change-Id: Ib1d273ef2c2bb97a2343da6d361fde7c01012040
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

src/plugins/debugger/watchhandler.cpp

@@ -274,6 +274,7 @@ private:
 WatchModel::WatchModel(WatchHandler *handler)
     : m_handler(handler)
 {
+    setObjectName(QLatin1String("WatchModel"));
     m_root = createItem(QByteArray(), tr("Root"), 0);
     // Note: Needs to stay
     m_localsRoot = createItem("local", tr("Locals"), m_root);