[autoroll] Fix last-roll-succeeded logic for notifications
[autoroll] Fix last-roll-succeeded logic for notifications

Whoops.

Bug: skia:7701
Change-Id: I919f8ad521ff00c511b65cb102dcf73788bd790a
Reviewed-on: https://skia-review.googlesource.com/125867
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot