Description of problem:
A customer reported, that when starting postfix on RHEL 8, the following warning is displayed:

restorecon[164623]: /usr/sbin/restorecon: lstat(/var/spool/postfix/pid/master.pid) failed: No such file or directory

It seems that this is a side-effect of https://bugzilla.redhat.com/show_bug.cgi?id=2028015

Version-Release number of selected component (if applicable):
postfix 3.5.8-4.el8

How reproducible:
always

Steps to Reproduce:
1. install postfix
2. start postfix
3. check journalctl for warning: journalctl | grep master.pid

Actual results:
A warning is shown for master.pid missing

Expected results:
No warning should be shown, as everything is working as expected and the master.pid should not be there at this stage during start.