Currently we check `if not (osmesa_path and glapi_path)` after using
`path.join`. It seems we actually want to check whether
`find_dep_path_newest` returns something, because if calls to that
function fail, we'll instead get an error from `path.join` about
`NoneType` not having attribute `endswith` (it expects a string), which
preempts this check.
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because this is a change to `./mach` (are there tests for that?)
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Source-Repo: https://github.com/servo/servo
Source-Revision: edd82b3c20766877f4530e90a2ec1c9ce3fed848
--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : 76a0c145e112b85a22404a7229e370edece3b92e
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