[Citadel Development] Re: serv_extensions.c: style cleanup from 30,000 feet

>git push from an airplane?  showoff Yup. :) Unfortunately I was en route to World Of Crap (AWS re:Invent) while on the plane. As a t-mobile customer I get a lot of free wifi benefits. I think they provide the ground links or something.

[Citadel Development] Converting recipient arrays to recipient strings:

Fixed the dedupe so it works before now, and also made it DRY.