URL's isolatedCopy() optimization when called on a r-value reference doesn't work.
Created attachment 453866 [details] Patch
Comment on attachment 453866 [details] Patch r=me
Committed r290846 (248079@main): <https://commits.webkit.org/248079@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 453866 [details].
<rdar://problem/89833756>