This ensures that last_cursor_ is intialized before it is checked. This code is in the Firefox repo with the original review here: https://phabricator.services.mozilla.com/D113833 Bug: webrtc:13481 Change-Id: I806009cba1aba193ab12bb86e39f98c56043000f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/239725 Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Commit-Queue: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35509}