From 568fdd60e6deaf731c4ec6092724424f03c211a5 Mon Sep 17 00:00:00 2001
From: setunapo <setunapo@outlook.kr>
Date: Tue, 28 Jun 2022 10:29:09 +0800
Subject: [PATCH] fix review comments

---
 core/state/statedb.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/state/statedb.go b/core/state/statedb.go
index 2182a2f648..dad82c30c4 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -223,6 +223,9 @@ func (s *StateDB) StopPrefetcher() {
 }
 
 func (s *StateDB) TriePrefetchInAdvance(block *types.Block, signer types.Signer) {
+	if s.prefetcher == nil {
+		return
+	}
 	accounts := make(map[common.Address]struct{}, block.Transactions().Len()<<1)
 	for _, tx := range block.Transactions() {
 		from, err := types.Sender(signer, tx)
@@ -240,7 +243,7 @@ func (s *StateDB) TriePrefetchInAdvance(block *types.Block, signer types.Signer)
 		addressesToPrefetch = append(addressesToPrefetch, common.CopyBytes(addr[:])) // Copy needed for closure
 	}
 
-	if s.prefetcher != nil && len(addressesToPrefetch) > 0 {
+	if len(addressesToPrefetch) > 0 {
 		s.prefetcher.prefetch(s.originalRoot, addressesToPrefetch, emptyAddr)
 	}
 }