update rc script for sshguard


git-svn-id: http://svn.midnightbsd.org/svn/mports@17769 c872e0db-cc11-e311-ab8b-002590791c19
no plist


git-svn-id: http://svn.midnightbsd.org/svn/mports@17770 c872e0db-cc11-e311-ab8b-002590791c19