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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 fix#8509.
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- [ ] There are tests for these changes OR
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Source-Repo: https://github.com/servo/servo
Source-Revision: 1fee88e59ca3119ceb258317a174d56e9c9dc169
