strconv: use builtin min function in commonPrefixLenIgnoreCase
To make code a bit simpler.
Change-Id: I33b3e04bc810a4838584c477854ef612b355579a
GitHub-Last-Rev:
6d5bbc2a2877193e1319b9e626f408eda399666e
GitHub-Pull-Request: golang/go#71927
Reviewed-on: https://go-review.googlesource.com/c/go/+/651975
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>
Auto-Submit: Robert Griesemer <gri@google.com>