From 13325361e5c2eefd8a688a3addc4f95ad57a4a8e Mon Sep 17 00:00:00 2001
From: songjiayang <songjiayang1@gmail.com>
Date: Thu, 8 Nov 2018 14:50:32 +0800
Subject: [PATCH] make blockservice AddBlocks return more quickly

---
 blockservice.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/blockservice.go b/blockservice.go
index 2e1de3f..926b720 100644
--- a/blockservice.go
+++ b/blockservice.go
@@ -181,6 +181,10 @@ func (s *blockService) AddBlocks(bs []blocks.Block) error {
 		toput = bs
 	}
 
+	if len(toput) == 0 {
+		return nil
+	}
+
 	err := s.blockstore.PutMany(toput)
 	if err != nil {
 		return err