The signature of SouceSpan::operator== is missing a const specifier.
<rdar://problem/100401133>
Pull request: https://github.com/WebKit/WebKit/pull/4697
Committed 254881@main (c2a2543ba247): <https://commits.webkit.org/254881@main> Reviewed commits have been landed. Closing PR #4697 and removing active labels.