[SSSD] [PATCH] Two minor patches for tokenGroups nested group processing

[Jakub Hrozek]

Hi,

the attached two patches are not strictly related to tokenGroups
processing, but it's very easy to reproduce the problem that way. The
issue is only confusing DEBUG messages, but it has already cost me
several hours in processing logs from an SSSD user, so I think a fix is
due, at least for master.

See the patches and the commit messages for more details.