From a1db38af74f18e6edc3b939df95da7b4445db38c Mon Sep 17 00:00:00 2001
From: zhiqiangxu <652732310@qq.com>
Date: Mon, 14 Feb 2022 19:05:48 +0800
Subject: [PATCH] p2p: reduce the scope of variable dialPubkey (#24385)

dialPubkey isn't used anywhere else after dialDest.Load, so it should be safe to
restrict its scope to the if clause.
---
 p2p/server.go | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/p2p/server.go b/p2p/server.go
index 6d2b6b1c15..38c2d73a0e 100644
--- a/p2p/server.go
+++ b/p2p/server.go
@@ -976,9 +976,8 @@ func (srv *Server) setupConn(c *conn, flags connFlag, dialDest *enode.Node) erro
 	}
 
 	// If dialing, figure out the remote public key.
-	var dialPubkey *ecdsa.PublicKey
 	if dialDest != nil {
-		dialPubkey = new(ecdsa.PublicKey)
+		dialPubkey := new(ecdsa.PublicKey)
 		if err := dialDest.Load((*enode.Secp256k1)(dialPubkey)); err != nil {
 			err = errors.New("dial destination doesn't have a secp256k1 public key")
 			srv.log.Trace("Setting up connection failed", "addr", c.fd.RemoteAddr(), "conn", c.flags, "err", err)