The const-ref result of .str() must be copied into the returned value, whereas the result of .Release() can be moved. Bug: webrtc:374845009 Change-Id: I3abc98be30ce9947127c7664f5ffa6846b772ea2 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/366480 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43288}