From 08216ccf3148730c63c0ea69fccfcd57187a4d41 Mon Sep 17 00:00:00 2001
From: qm012 <67568757+qm012@users.noreply.github.com>
Date: Thu, 17 Jun 2021 18:11:38 +0800
Subject: [PATCH] fix undefined: err (#2181)

---
 plugins/server/grpc/grpc.go | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/plugins/server/grpc/grpc.go b/plugins/server/grpc/grpc.go
index 3a040b5c..67053705 100644
--- a/plugins/server/grpc/grpc.go
+++ b/plugins/server/grpc/grpc.go
@@ -842,12 +842,14 @@ func (g *grpcServer) Start() error {
 	config := g.Options()
 
 	// micro: config.Transport.Listen(config.Address)
-	var ts net.Listener
+	var (
+		ts net.Listener
+		err error
+	)
 
 	if l := g.getListener(); l != nil {
 		ts = l
 	} else {
-		var err error
 
 		// check the tls config for secure connect
 		if tc := config.TLSConfig; tc != nil {