[webkit-reviews] review requested: [Bug 73737] HIERARCHY_REQUEST_ERR check in checkAcceptChild should be optimized for newChild without children : [Attachment 117784] Also implement arv's optimization

[bugzilla-daemon at webkit.org]

Ryosuke Niwa <rniwa at webkit.org> has asked  for review:
Bug 73737: HIERARCHY_REQUEST_ERR check in checkAcceptChild should be optimized
for newChild without children
https://bugs.webkit.org/show_bug.cgi?id=73737

Attachment 117784: Also implement arv's optimization
https://bugs.webkit.org/attachment.cgi?id=117784&action=review