Accomodate for ASANs detect_stack_use_after_return=1 when computing scope marker for safepointing
Accomodate for ASANs detect_stack_use_after_return=1 when computing scope marker for safepointing

R=ager@chromium.org
BUG=339813

Review URL: https://codereview.chromium.org/147743003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@166240 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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