_addToLog is asynchronous, and ValidateCommitterAndReviewer should treat it that way.
<rdar://problem/104968843>
Pull request: https://github.com/WebKit/WebKit/pull/9544
Test comment
Committed 259773@main (77e6c610c986): <https://commits.webkit.org/259773@main> Reviewed commits have been landed. Closing PR #9544 and removing active labels.