Remove redundant returns from functions returning void.  Wrap return values in () for consistency.
Remove redundant returns from functions returning void.  Wrap return
values in () for consistency.

diff from Michael W. Bombardieri.
ok sthen dlg mikeb

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars