From c834bec3ebc474c5fae8fb5d10dba1498a82fe47 Mon Sep 17 00:00:00 2001
From: Petya Petrov <102591448+devil666face@users.noreply.github.com>
Date: Sun, 2 Mar 2025 01:55:54 +0300
Subject: [PATCH] Fix(engine): mutex never unlocked on error (#456)

* fix error when mutex never unlock

---------

Co-authored-by: devil666face <artem1999k@gmail.com>
Co-authored-by: Jason Lyu <xjasonlyu@gmail.com>
---
 engine/engine.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/engine/engine.go b/engine/engine.go
index 1c890e1..9e8cfe6 100644
--- a/engine/engine.go
+++ b/engine/engine.go
@@ -62,6 +62,8 @@ func Insert(k *Key) {
 
 func start() error {
 	_engineMu.Lock()
+	defer _engineMu.Unlock()
+
 	if _defaultKey == nil {
 		return errors.New("empty key")
 	}
@@ -75,7 +77,6 @@ func start() error {
 			return err
 		}
 	}
-	_engineMu.Unlock()
 	return nil
 }