This fixes an edge case where the frame size changes for a DTX packet. We should avoid having the frame size larger than the timestamp gap. Bug: None Change-Id: I0a384cfb06f5aebc1654c1e3d127541fd24e05c7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/360722 Reviewed-by: Tomas Lundqvist <tomasl@google.com> Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42873}