minor change for Sophos.autoupdate

[Devin Reade]

Julian,

On Red Hat (and maybe other) systems, the default install
creates the file /etc/cron.daily/Sophos.autoupdate.  To make
things cleaner for systems that don't use Sophos, would you
mind adding the following line near the top of that script?

        [ -x /usr/local/Sophos/bin/sweep ] || exit 0

Thanks.
--
        Devin Reade             <gdr at gno.org>