New comment by Chocimier on void-packages repository

https://github.com/void-linux/void-packages/pull/34187#issuecomment-978166942

Comment:
- should be named `Subsurface`, then no need for wrksrc
- variables continuation should be indented by one space (that fixes lint as side effect)
- don't do conditional hostmakedepends, move into regular variable
- no need for `Subsurface/update`, defaults work here