From e5bc3b14fbb3a25be95f19e981c0fa5f45fea4cb Mon Sep 17 00:00:00 2001
From: Tom Thorogood <me+github@tomthorogood.co.uk>
Date: Mon, 26 Nov 2018 15:08:05 +1030
Subject: [PATCH] Use lenmsg rather than len(msg) in packDomainName

This is purely for consistency, they are always equal at this point.
---
 msg.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/msg.go b/msg.go
index 1937d7e6..6474d949 100644
--- a/msg.go
+++ b/msg.go
@@ -324,7 +324,7 @@ loop:
 		return off + 2, labels, nil
 	}
 
-	if msg != nil && off < len(msg) {
+	if msg != nil && off < lenmsg {
 		msg[off] = 0
 	}