fix compilation

weed/mq/broker/broker_grpc_sub.go

@@ -11,8 +11,8 @@ import (
 
 func (broker *MessageQueueBroker) Subscribe(req *mq_pb.SubscribeRequest, stream mq_pb.SeaweedMessaging_SubscribeServer) error {
 
-	localTopicPartition := broker.localTopicManager.GetTopicPartition(topic.FromPbTopic(req.Cursor.Topic),
-		topic.FromPbPartition(req.Cursor.Partition))
+	localTopicPartition := broker.localTopicManager.GetTopicPartition(topic.FromPbTopic(req.GetConsumer().Topic),
+		topic.FromPbPartition(req.GetConsumer().Partition))
 	if localTopicPartition == nil {
 		stream.Send(&mq_pb.SubscribeResponse{
 			Message: &mq_pb.SubscribeResponse_Ctrl{
@@ -24,7 +24,7 @@ func (broker *MessageQueueBroker) Subscribe(req *mq_pb.SubscribeRequest, stream
 		return nil
 	}
 
-	clientName := fmt.Sprintf("%s/%s-%s", req.Consumer.ConsumerGroup, req.Consumer.ConsumerId, req.Consumer.ClientId)
+	clientName := fmt.Sprintf("%s/%s-%s", req.GetConsumer().ConsumerGroup, req.GetConsumer().ConsumerId, req.GetConsumer().ClientId)
 
 	localTopicPartition.Subscribe(clientName, time.Now(), func(logEntry *filer_pb.LogEntry) error {
 		value := logEntry.GetData()