getRemoteIP function fails when running from cron

Hey guys,

Thanks for the amazing plugin! However I have a small problem with it.

I have a cron script which runs wp-cli to check if there are any updates to plugins and notify me. Because I run it from cli REMOTE_ADDR is not populated, and so the remote_ip is effectively null.

Can you add a check if the script is run from cli then fail gracefully without throwing fatal errors all over the place.

https://wordpress.org/plugins/wp-cerber/