lupdate: When a class inherits from a QObject class and a class in a namespace then it makes the tr calls be in the namespace

lupdate: When a class inherits from a QObject class and a class in a namespace then it makes the tr calls be in the namespace, even though the namespaced class is not a QObject based one.

linguistBugDemo::linguistBugDemo(QWidget *parent, Qt::WFlags flags)
    : QMainWindow(parent, flags)
    , nsdummy::nsenclosed::DummyClass()
{
    tr("translated text");
}