From 247298c7a22c09d2a85aa7bbeb83995cdb8aebd2 Mon Sep 17 00:00:00 2001
From: Qian Bin <cola.tin.com@gmail.com>
Date: Thu, 28 Nov 2019 18:59:12 +0800
Subject: [PATCH] trie: fix the bug checking empty trie

---
 trie/iterator.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/trie/iterator.go b/trie/iterator.go
index 8e84dee3b6..513fa46306 100644
--- a/trie/iterator.go
+++ b/trie/iterator.go
@@ -135,7 +135,7 @@ func (e seekError) Error() string {
 }
 
 func newNodeIterator(trie *Trie, start []byte) NodeIterator {
-	if trie.Hash() == emptyState {
+	if trie.Hash() == emptyRoot {
 		return new(nodeIterator)
 	}
 	it := &nodeIterator{trie: trie}