Remove old return value. Use single variable range for iter.Seq[V].
Rewrite Pairs implementation to not loop forever.
Fixes #68056
Fixes #68073
Change-Id: I7ede0fe8ed058bbd57869d87e17b7f2c3641f7dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/593555
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com> Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>