Attempting to fix warnings from https://bugs.webkit.org/show_bug.cgi?id=246246#c6. Note these do not occur in my own local builds.
Pull request: https://github.com/WebKit/WebKit/pull/5637
Committed 255855@main (253ec2eb4b6c): <https://commits.webkit.org/255855@main> Reviewed commits have been landed. Closing PR #5637 and removing active labels.