From 7261d0bea3e87781961c8f5c559542f5c038d3d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felf=C3=B6ldi=20Zsolt?= <zsfelfoldi@gmail.com>
Date: Fri, 17 Jan 2025 13:32:22 +0100
Subject: [PATCH] ethdb/memorydb: add errMemorydbClosed check

Co-authored-by: Martin HS <martin@swende.se>
---
 ethdb/memorydb/memorydb.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ethdb/memorydb/memorydb.go b/ethdb/memorydb/memorydb.go
index 4d932bb631..a797275e92 100644
--- a/ethdb/memorydb/memorydb.go
+++ b/ethdb/memorydb/memorydb.go
@@ -126,6 +126,9 @@ func (db *Database) Delete(key []byte) error {
 func (db *Database) DeleteRange(start, end []byte) error {
 	db.lock.Lock()
 	defer db.lock.Unlock()
+	if db.db == nil {
+		return errMemorydbClosed
+	}
 
 	for key := range db.db {
 		if key >= string(start) && key < string(end) {