structureOrNull should take VM instead of getting it from the marked block
Created attachment 407423 [details] Patch
Comment on attachment 407423 [details] Patch r=me
Committed r266251: <https://trac.webkit.org/changeset/266251> All reviewed patches have been landed. Closing bug and clearing flags on attachment 407423 [details].
<rdar://problem/67893118>