[SSSD] [sssd PR#103][comment] sudo: do not store usn if no rules are found

[fidencio]

URL: https://github.com/SSSD/sssd/pull/103
Title: #103: sudo: do not store usn if no rules are found

lslebodn commented:
"""
Jakub reviewed https://fedorahosted.org/sssd/ticket/2970 and overlooked such small issue. :-)
we should let him to review it one more time
"""

See the full comment at https://github.com/SSSD/sssd/pull/103#issuecomment-264887362