URL:
https://github.com/SSSD/sssd/pull/870
Title: #870: pam: do not accept empty PIN
sumit-bose commented:
"""
Hi Pavel,
good catch, I added a second patch since it is not directly related to the issue.
bye,
Sumit
"""
See the full comment at
https://github.com/SSSD/sssd/pull/870#issuecomment-523465123