[SSSD] [sssd PR#5646][comment] responder: fix covscan issues

[alexey-tikhonov]

  URL: https://github.com/SSSD/sssd/pull/5646
Title: #5646: responder: fix covscan issues

alexey-tikhonov commented:
"""
Thank you, ACK.
"""

See the full comment at https://github.com/SSSD/sssd/pull/5646#issuecomment-846082453