This failed on the Memcheck bot due to different stack signature.
Widening the suppression should fix that.
BUG=webrtc:5988
TBR=pthatcher@webrtc.org
Change-Id: Ia448d0f157d650e3ab6d4b02b3acbac91c62d1cd
Reviewed-on: https://chromium-review.googlesource.com/553377
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#18818}