This fixes the binding loop warning that is printed in any application
that makes use of TabView. It was casued by a QTBUG-35038 and a
proper fix for that will be posted to the stable branch.

Task-number: QTBUG-35134
Change-Id: Ia60c789d9fb8ee662215628fa9733b17cf9be90c
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>