Re: Refactoring backend fork+exec code

While looking into [0], I noticed that main() still only checks for the
--fork prefix, but IIUC commit aafc05d removed all --fork* options except
for --forkchild.  I've attached a patch to strengthen the check in main().
This is definitely just a nitpick.

[0] https://postgr.es/m/CAKAnmmJkZtZAiSryho%3DgYpbvC7H-HNjEDAh16F3SoC9LPu8rqQ%40mail.gmail.com

-- 
nathan