From 347ad523e8943090ec9d92cccabc92819889a4d6 Mon Sep 17 00:00:00 2001
From: kkhaike <kkhaike@gmail.com>
Date: Wed, 21 Feb 2024 21:40:02 +0800
Subject: [PATCH] net: Correct the code snippet erroneously rolled back in
 CL550435

In CL https://golang.org/cl/550435, a segment that had already been reviewed and modified was rolled back due to an erroneous operation. Here, submit a correct code snippet.

Change-Id: I46adfad110d532aec5f557c350fe6dccbc583968
Reviewed-on: https://go-review.googlesource.com/c/go/+/565628
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Mateusz Poliwczak <mpoliwczak34@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
---
 src/net/dnsclient_unix.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/net/dnsclient_unix.go b/src/net/dnsclient_unix.go
index bef285e413..e9e7e4df15 100644
--- a/src/net/dnsclient_unix.go
+++ b/src/net/dnsclient_unix.go
@@ -270,10 +270,10 @@ func extractExtendedRCode(p dnsmessage.Parser, hdr dnsmessage.Header) (dnsmessag
 	hasAdd := false
 	for {
 		ahdr, err := p.AdditionalHeader()
-		hasAdd = hasAdd || err != dnsmessage.ErrSectionDone
 		if err != nil {
 			return hdr.RCode, hasAdd
 		}
+		hasAdd = true
 		if ahdr.Type == dnsmessage.TypeOPT {
 			return ahdr.ExtendedRCode(hdr.RCode), hasAdd
 		}
-- 
2.48.1