From ea06da089264508601a9f967160b8c7f335071fa Mon Sep 17 00:00:00 2001
From: Sarlor <kinsleer@outlook.com>
Date: Thu, 7 Jun 2018 16:48:36 +0800
Subject: [PATCH] trie: avoid unnecessary slicing on shortnode decoding
 (#16917)

optimization code
---
 trie/encoding.go | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/trie/encoding.go b/trie/encoding.go
index 221fa6d3a..5f120de63 100644
--- a/trie/encoding.go
+++ b/trie/encoding.go
@@ -53,10 +53,9 @@ func hexToCompact(hex []byte) []byte {
 
 func compactToHex(compact []byte) []byte {
 	base := keybytesToHex(compact)
-	base = base[:len(base)-1]
-	// apply terminator flag
-	if base[0] >= 2 {
-		base = append(base, 16)
+	// delete terminator flag
+	if base[0] < 2 {
+		base = base[:len(base)-1]
 	}
 	// apply odd flag
 	chop := 2 - base[0]&1