Otherwise we report a spurious difference after OOM.

Bug: chromium:1052849
Change-Id: I795f7393a8061ff41178295d49bdaea411d3c461
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2060307Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66292}