unique: use stringslite.Clone
Change-Id: Icb1ba7df1f0414090632e663b6a92b492546070d
GitHub-Last-Rev:
5169d2681311d2631d9119aea17114602efcaa24
GitHub-Pull-Request: golang/go#67092
Reviewed-on: https://go-review.googlesource.com/c/go/+/581940
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>