by allocating slightly larger buffer than requested Bug: webrtc:9868 Change-Id: I5fc92bba719db567ae135c35cfc76ae39170f81c Reviewed-on: https://webrtc-review.googlesource.com/c/105622 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25143}