From be7556aece965fcb22b6c7d706d757a571d71271 Mon Sep 17 00:00:00 2001
From: Xe Iaso <xe@tailscale.com>
Date: Mon, 7 Nov 2022 15:06:34 -0500
Subject: [PATCH] tsnet/example/tshello: use strings.Cut (#6198)

strings.Cut allows us to be more precise here. This example was written
before strings.Cut existed.

Signed-off-by: Xe <xe@tailscale.com>

Signed-off-by: Xe <xe@tailscale.com>
---
 tsnet/example/tshello/tshello.go | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tsnet/example/tshello/tshello.go b/tsnet/example/tshello/tshello.go
index 33db9f0bc..16131ef8a 100644
--- a/tsnet/example/tshello/tshello.go
+++ b/tsnet/example/tshello/tshello.go
@@ -57,8 +57,6 @@ func main() {
 }
 
 func firstLabel(s string) string {
-	if i := strings.Index(s, "."); i != -1 {
-		return s[:i]
-	}
+	s, _, _ = strings.Cut(s, ".")
 	return s
 }