fix error when add stream

stream.go

@@ -10,15 +10,10 @@ import (
 // AddStream add new stream, with default config
 func AddStream(name string, subjects []string) error {
 	// Get info about the stream
-	stream, err := natsJS.StreamInfo(name)
-	if err != nil {
-		msg := fmt.Sprintf("error getting stream info: %s", err.Error())
-		return errors.New(msg)
-	}
-
+	stream, _ := natsJS.StreamInfo(name)
 	// If stream not found, create new
 	if stream == nil {
-		_, err = natsJS.AddStream(&nats.StreamConfig{
+		_, err := natsJS.AddStream(&nats.StreamConfig{
 			Name:     name,
 			Subjects: subjects,
 			Storage:  nats.FileStorage,