From 7dca6fe1f43775aa6d1334576870ff63f978f539 Mon Sep 17 00:00:00 2001
From: Tobias Klauser <tklauser@distanz.ch>
Date: Thu, 8 Mar 2018 13:25:47 +0100
Subject: [PATCH] plan9: use bytes.IndexByte instead of a for loop

Change-Id: Iae896dc32e775cb469fc3d0d367fd7c7825161ec
Reviewed-on: https://go-review.googlesource.com/99516
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---
 plan9/syscall_plan9.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/plan9/syscall_plan9.go b/plan9/syscall_plan9.go
index d39d07de..84e14714 100644
--- a/plan9/syscall_plan9.go
+++ b/plan9/syscall_plan9.go
@@ -12,6 +12,7 @@
 package plan9
 
 import (
+	"bytes"
 	"syscall"
 	"unsafe"
 )
@@ -50,12 +51,11 @@ func atoi(b []byte) (n uint) {
 }
 
 func cstring(s []byte) string {
-	for i := range s {
-		if s[i] == 0 {
-			return string(s[0:i])
-		}
+	i := bytes.IndexByte(s, 0)
+	if i == -1 {
+		i = len(s)
 	}
-	return string(s)
+	return string(s[:i])
 }
 
 func errstr() string {