Redirect Loop if other module implements custom_url_rewrite_outbound (with patch!)

I have stumbled upon an issue resulting in an infinite redirect loop when using geoip_language in conjunction with the 'Domain Access' project. After a bit of reading I came across the implementation of custom_url_rewrite_outbound and a bit later I had implemented it within geoip_language.

I thought I should share it. However I tested it for like 30 seconds only and it seemed to work so far.
I'll do a bit more testing on monday and report back, hopefully less confused than I am right now. In the meantime you guys might test it and think it's good or tell me to fuck off because I suck hairy donkeyballs.

Good evening to you dear sirs, I'm going home.