Still trying to find the culprit for https://crbug.com/893973,
which seems to be some internal inconsistency in the debug stack
trace iterator.

Bug: chromium:893973
Tbr: yangguo@chromium.org
Change-Id: Id8d62a371cb957d3e78f4919e1ed8b9f54c5738b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1918246Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64985}