From e18e7775b3f760733808cbcc08c40c5d14cb6696 Mon Sep 17 00:00:00 2001
From: rjl493456442 <garyrong0905@gmail.com>
Date: Fri, 24 Apr 2020 09:32:58 +0800
Subject: [PATCH] trie: unset the edge valuenode as nilValuenode

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

diff --git a/trie/proof.go b/trie/proof.go
index 9611b5a3e8..07ce8e6d84 100644
--- a/trie/proof.go
+++ b/trie/proof.go
@@ -265,7 +265,7 @@ func unset(root node, rest []byte, removeLeft bool) {
 	case *shortNode:
 		rn.flags = nodeFlag{dirty: true}
 		if _, ok := rn.Val.(valueNode); ok {
-			rn.Val = nil
+			rn.Val = nilValueNode
 			return
 		}
 		unset(rn.Val, rest[len(rn.Key):], removeLeft)