Stop using goto in HTMLDocumentParserFastPath.cpp. Also use the ElementNames namespace instead of the ElementName enumeration directly as I was told this is the preferred way (the enumeration values have underscores in their name, which doesn't look as good).
Pull request: https://github.com/WebKit/WebKit/pull/12616
Committed 262845@main (2b9b39fac578): <https://commits.webkit.org/262845@main> Reviewed commits have been landed. Closing PR #12616 and removing active labels.
<rdar://problem/107905907>