[SSSD] [sssd PR#5498][comment] Covscan fixes

[alexey-tikhonov]

URL: https://github.com/SSSD/sssd/pull/5498
Title: #5498: Covscan fixes

alexey-tikhonov commented:
"""
Hi @abbra,

3 patches were pushed via #5526

This leaves `pam_sss: free env_item when not needed` out but I believe corresponding covscan warning is "false positive" and from my point of view patch isn't entirely correct.

I will close this PR. Please open a new one if you still want to propose [another version of] this patch.
"""

See the full comment at https://github.com/SSSD/sssd/pull/5498#issuecomment-791462050