Check for null return from AXIsolatedTree::nodeForID.
Created attachment 389880 [details] Patch
The commit-queue encountered the following flaky tests while processing attachment 389880 [details]: editing/spelling/spellcheck-attribute.html bug 206178 (authors: g.czajkowski@samsung.com, mark.lam@apple.com, and rniwa@webkit.org) The commit-queue is continuing to process your patch.
Comment on attachment 389880 [details] Patch Clearing flags on attachment: 389880 Committed r255884: <https://trac.webkit.org/changeset/255884>
All reviewed patches have been landed. Closing bug.
<rdar://problem/59208931>