net/netip: use built-in clear to simplify code
Change-Id: Ic7b390935df107c5b7f53f9347a52031eac8a897
GitHub-Last-Rev:
a7194571e1c2f90537f1caa8a3b5bcd60cea60be
GitHub-Pull-Request: golang/go#66310
Reviewed-on: https://go-review.googlesource.com/c/go/+/571635
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>