GitLab

Fix possible calls on null pointer.

Change-Id: I5899e0debfba13afc330a88d6d2eaec29275fa77
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1533907
Commit-Queue: Alexander Kalugin <akalugin@yandex-team.ru>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649766}