The test shows spurious failures in editingFinished() on some Mac
platforms (QTest::qWaitForWindowActive(testFocusWidget)).
This is apparently caused by the widget testFocusWidget (member
variable) interfering with the other tests widgets.
As it is used in one test only, instantiate it on the stack there.
Change-Id: I688cd21a2668d072660658302cf59197abe0b4d8
Reviewed-by: Qt Doc Bot <qt_docbot@qt-project.org>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>