Since ports r448274 the rc.d script for milter-opendkim outputs an error when I do not have $milteropendkim_socket set in rc.conf but have it set in the config file. The latest change to the rc.d script appears to assume that $milteropendkim_socket is always set.

I think a default is needed or the test in line 77 needs to check if anything is in the $milteropendkim_socket variable. test(1) returns true (exit code 0) when given no args.

Below is the output from starting milter-opendkim without setting $milteropendkim_socket in rc.conf with rc_debug enabled:

[tsr@smtp2 ~]$ sudo service milter-opendkim start
/usr/local/etc/rc.d/milter-opendkim: DEBUG: pid file (/var/run/milteropendkim/pid): not readable.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: checkyesno: milteropendkim_enable is set to yes.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: start_precmd: dkim_prepcmd 
Starting milteropendkim.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: doit:  limits -C daemon /usr/local/sbin/opendkim  -l   -u postfix:mailnull -P /var/run/milteropendkim/pid -x /usr/local/etc/opendkim.conf    
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: start_postcmd: dkim_start_postcmd 
usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...
[tsr@smtp2 ~]$ 

Below is the output from starting milter-opendkim with $milteropendkim_socket set in rc.conf with rc_debug enabled:

[tsr@smtp2 ~]$ sudo service milter-opendkim start
/usr/local/etc/rc.d/milter-opendkim: DEBUG: pid file (/var/run/milteropendkim/pid): not readable.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: checkyesno: milteropendkim_enable is set to yes.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: start_precmd: dkim_prepcmd 
Starting milteropendkim.
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: doit:  limits -C daemon /usr/local/sbin/opendkim  -l -p local:/var/spool/postfix/opendkim/opendkim.sock -u postfix:mailnull -P /var/run/milteropendkim/pid -x /usr/local/etc/opendkim.conf    
/usr/local/etc/rc.d/milter-opendkim: DEBUG: run_rc_command: start_postcmd: dkim_start_postcmd 
[tsr@smtp2 ~]$