Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1294
X-link: https://github.com/facebook/react-native/pull/37383
Add -Wextra to the build, and fixup some more instances of -Wunused-parameter that it sufaces which were not automatically fixable.
Reviewed By: javache
Differential Revision: D45772846
fbshipit-source-id: 29bf71006f63161521fe5869c3a7d8bf7aae9c81