From 0f64d7f9cc295a4468db91254dc196fa6c3d7aff Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Tue, 7 Apr 2020 22:22:36 -0700
Subject: [PATCH] wgengine: remove a tiny allocation

Drop in the bucket compared to the larger issues, but noticed it
when looking at pprof.
---
 wgengine/userspace.go | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/wgengine/userspace.go b/wgengine/userspace.go
index 30272903e..ee3593dcd 100644
--- a/wgengine/userspace.go
+++ b/wgengine/userspace.go
@@ -481,11 +481,9 @@ func (e *userspaceEngine) getStatus() (*Status, error) {
 	var hst1, hst2, n int64
 	var err error
 	for _, line := range lines {
-		kv := strings.SplitN(line, "=", 2)
-		var k, v string
-		k = kv[0]
-		if len(kv) > 1 {
-			v = kv[1]
+		k, v := line, ""
+		if i := strings.IndexByte(line, '='); i != -1 {
+			k, v = line[:i], line[i+1:]
 		}
 		switch k {
 		case "public_key":