From 33eefab945821439bd7e00f36a7282dd93439d1f Mon Sep 17 00:00:00 2001
From: HuangYi <huang@crypto.com>
Date: Sat, 15 Jan 2022 20:20:54 +0800
Subject: [PATCH] review suggestion

---
 rpc/ethereum/types/utils.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rpc/ethereum/types/utils.go b/rpc/ethereum/types/utils.go
index fd6fad93f1..31abc28645 100644
--- a/rpc/ethereum/types/utils.go
+++ b/rpc/ethereum/types/utils.go
@@ -286,6 +286,7 @@ func FindTxAttributes(events []abci.Event, txHash string) (int, map[string]strin
 // returns the msgIndex, returns -1 if not found.
 func FindTxAttributesByIndex(events []abci.Event, txIndex uint64) int {
 	strIndex := []byte(strconv.FormatUint(txIndex, 10))
+	txIndexKey := []byte(evmtypes.AttributeKeyTxIndex)
 	msgIndex := -1
 	for _, event := range events {
 		if event.Type != evmtypes.EventTypeEthereumTx {
@@ -294,7 +295,7 @@ func FindTxAttributesByIndex(events []abci.Event, txIndex uint64) int {
 
 		msgIndex++
 
-		value := FindAttribute(event.Attributes, []byte(evmtypes.AttributeKeyTxIndex))
+		value := FindAttribute(event.Attributes, txIndexKey)
 		if !bytes.Equal(value, strIndex) {
 			continue
 		}