strconv: document that Unquote("''") returns an empty string
Fixes #64280
Change-Id: I1ad84d85b666a2ef52dc6ecdecd508b4e7fe24a6
GitHub-Last-Rev:
6242027261f02c578a09f70fcb39a8cac259855c
GitHub-Pull-Request: golang/go#68524
Reviewed-on: https://go-review.googlesource.com/c/go/+/599575
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>