The new member variable activeChildren shall contain the number of
direct children that are active. This number differs from
children.count() because the vector may contain empty entries that
haven't been garbage-collected yet (obj == NULL and activeChildren ==
0).
When this count drops to zero, we know we can simply erase the vector of
children.
Change-Id: Ia20604d3fac852ea4a6e8862d934fbb936fa5e18
Reviewed-by: David Faure (KDE) <faure@kde.org>
3c6bb0ed8b