fix: Unified variable management

Signed-off-by: fsl <1171313930@qq.com>

pkg/plugins/golang/v4/scaffolds/internal/templates/main.go

@@ -221,11 +221,14 @@ func init() {
 }
 
 func main() {
-	var metricsAddr string
-	var enableLeaderElection bool
-	var probeAddr string
-	var secureMetrics bool
-	var enableHTTP2 bool
+	var (
+		enableLeaderElection bool
+		secureMetrics        bool
+		enableHTTP2          bool
+		metricsAddr          string
+		probeAddr            string
+		tlsOpts              []func(*tls.Config)
+	)
 	flag.StringVar(&metricsAddr, "metrics-bind-address", "0", "The address the metrics endpoint binds to. " +
 		"Use :8443 for HTTPS or :8080 for HTTP, or leave as 0 to disable the metrics service.")
 	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
@@ -255,7 +258,6 @@ func main() {
 		c.NextProtos = []string{"http/1.1"}
 	}
 
-	tlsOpts := []func(*tls.Config){}
 	if !enableHTTP2 {
 		tlsOpts = append(tlsOpts, disableHTTP2)
 	}