From mboxrd@z Thu Jan  1 00:00:00 1970
MIME-Version: 1.0
In-Reply-To: <CAHcDtnmaPxazZxQdhqzt8DxvX93nB2aTi9iU5TXdNpNBy130+w@mail.gmail.com>
References: <CAHcDtnmaPxazZxQdhqzt8DxvX93nB2aTi9iU5TXdNpNBy130+w@mail.gmail.com>
Date: Wed, 24 Aug 2011 13:03:28 -0400
Message-ID: <CADSkJJWMQbkGGyOjW_kpMZjfJn6veyUPt9rVV3-GFP7SSo8yzg@mail.gmail.com>
Subject: Re: [9fans] get the last write offset in p9p acme
From: Russ Cox <rsc@swtch.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Cc: golang-nuts <golang-nuts@googlegroups.com>
Content-Type: text/plain; charset=UTF-8
Topicbox-Message-UUID: 156634de-ead7-11e9-9d60-3106f5b1d025

Seems fine to me.
You can shorten to w.Addr(",")