acl: Don't crash if opening dovecot-acl fails with EACCES.
acl: Don't crash if opening dovecot-acl fails with EACCES.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot