InputType::createIfDifferent should avoid hash map lookup when the current type name is identically equal to the new type name.
Pull request: https://github.com/WebKit/WebKit/pull/4392
Committed 254547@main (f4a09a78399b): <https://commits.webkit.org/254547@main> Reviewed commits have been landed. Closing PR #4392 and removing active labels.
<rdar://problem/100016270>