The function was using an non-atomic marking state to check the color
of the object. This is incorrect because concurrent marking may be
running while the linear allocation area is freed.

Bug: chromium:1139165
Change-Id: I20ef22908dfd8dcd75858707e884e87658dcb1cb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2526391
Auto-Submit: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71057}