sg: exit 'sg setup' when user hits ctrl-c
Created by: mrnugget
This was a regression introduced by 4abaacec730d00ccf59f4e972ea22fbc80c80287.
I don't think we can easily return that EmptyExitErr from the goroutine,
so os.Exit(0)
still seems like the cleanest way of doing it.
Test plan
- Manually test it