We currently copy the contents of the PrepareBackingStoreBuffersOutputData vector, which means retaining and releasing a Mach send right unnecessarily.
Pull request: https://github.com/WebKit/WebKit/pull/1932
Committed 251976@main (29e7147feebc): <https://commits.webkit.org/251976@main> Reviewed commits have been landed. Closing PR #1932 and removing active labels.
<rdar://problem/96188094>