Avoid unnecessary unicode conversion of OUT_DIR. (#83)
Avoid unnecessary unicode conversion of OUT_DIR. (#83)

It isn't useful to convert the environment variable to Unicode since
`Command` deals with `OsStr` (`Into<&OsStr>`) anyway.

Contributed on behalf of Buoyant, Inc.

Signed-off-by: Brian Smith <760e7dab2836853c63805033e514668301fa9c47@briansmith.org>
danburkert/prost,danburkert/prost