Call reset(nullptr) in scoped_ptr's destructor.
This behaviour is consistent with libc++.
The original goal of this change is to make Chrome crash more often
and closer to the source when there's a use-after-free bug that
accesses a destroyed scoped_ptr.
BUG=535321
Committed: https://crrev.com/cf9db6ef148d1493dbf6bdc6693f9c79e3ac2afc
Cr-Commit-Position: refs/heads/master@{#357297}
Review URL: https://codereview.chromium.org/1356483002
Cr-Commit-Position: refs/heads/master@{#357756}
2 files changed
