Merge pull request #240 from HAOYUatHZ/template

refine main.go template

tool/kratos/template.go

@@ -142,8 +142,7 @@ func main() {
 	httpSrv := http.New(svc)
 	c := make(chan os.Signal, 1)
 	signal.Notify(c, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
-	for {
+	for s := range c {
-		s := <-c
 		log.Info("get a signal %s", s.String())
 		switch s {
 		case syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT: