lib:talloc. Fix memory leak when destructors reparent children.

lib:talloc. Fix memory leak when destructors reparent children.

If a destructor reparents a child, we shouldn't exit the
loop freeing children as there may be others to process.

https://bugzilla.samba.org/show_bug.cgi?id=11901

Signed-off-by: Saji VR <saji.vr@nutanix.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Richard Sharpe <rsharpe@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu May  5 08:33:53 CEST 2016 on sn-devel-144