From cec82d9a4358017bf048021cc078fbb85ffc668e Mon Sep 17 00:00:00 2001
From: Radu Ioan Fericean <radu@fericean.ro>
Date: Fri, 8 Jul 2016 17:37:02 +0300
Subject: [PATCH] use defer!

---
 engine/cache_dumper.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/engine/cache_dumper.go b/engine/cache_dumper.go
index 6e84fb609..d16581a58 100644
--- a/engine/cache_dumper.go
+++ b/engine/cache_dumper.go
@@ -37,6 +37,7 @@ func (cd *cacheDumper) getDumpDb(prefix string) (*leveldb.DB, error) {
 		return nil, nil
 	}
 	cd.dbLocker.Lock()
+	defer cd.dbLocker.Unlock()
 	db, found := cd.dbMap[prefix]
 	if !found {
 		var err error
@@ -46,7 +47,6 @@ func (cd *cacheDumper) getDumpDb(prefix string) (*leveldb.DB, error) {
 		}
 		cd.dbMap[prefix] = db
 	}
-	cd.dbLocker.Unlock()
 	return db, nil
 }