[SSSD] [sssd PR#560][comment] NSS: close files after mmap

[ChrisKowalczyk]

URL: https://github.com/SSSD/sssd/pull/560
Title: #560: NSS: close files after mmap

ChrisKowalczyk commented:
"""
Thanks for all the comments and quick feedback! Sorry for sharing a closed bug report, I will prepare some better description of this scenario. I will also make sure that the tests are not failing.
@mzidek-rh , yes, I think your first comment was true for the second place we use mmap in sssd. I will follow @simo5 advice.
@jhrozek , I think that sss_cache was not the case, and this happened just after starting sssd. But as I mentioned, I will double check everything, update PR and provide better description and logs.
"""

See the full comment at https://github.com/SSSD/sssd/pull/560#issuecomment-384952061