This would simplify the port's makefile and make us compatible with the rest of package managers: https://repology.org/project/pam-ldap/versions
A commit references this bug:
Date: Mon Oct 19 15:02:16 UTC 2020
New revision: 552742
* Use the upstream 86 version instead of the artificial 1.8.6 
* Use @sample to handle the config file 
Thanks to 0mp for the good suggestions.
PR: 250341 
Fixed. Thanks for the suggestion!