The active target might be 0 if e.g. there are not kits and a project is
imported.

Task-number: QTCREATORBUG-13730
Change-Id: I48ade507fefc555d1d3f8230ba82c00270fa457b
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>