Matt Brubeck 4b68b81e97 servo: Merge #18971 - Use env::var_os to read paths from the environment (from mbrubeck:var); r=emilio
This avoids unnecessary UTF-8 validation on OsStrings that we just pass
back to the OS.

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because they are code cleanup only

Source-Repo: https://github.com/servo/servo
Source-Revision: 5ab0ac162019aede12a8150118328566467fddf2

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : c2249af39376e580dd2df6ed2ef943f16abe9fb6
2017-10-21 08:09:22 -05:00
..