This can happen when there are audio SSRCs in the event log without any associated events. Issue was introduced in https://webrtc-review.googlesource.com/c/src/+/300300 Bug: None Change-Id: Ib0e009095bf67633812d937aa5a9e65e2cd8958a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/300743 Reviewed-by: Björn Terelius <terelius@webrtc.org> Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39806}