Mark the not_ok case as deferred.

Bug: v8:8834
Change-Id: I17536e45fb6aa309347b8faaf5f25fb3bbfbf6cf
Reviewed-on: https://chromium-review.googlesource.com/c/1485973Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59830}