From 1b423b780700c8b02b79000c6c74b7da2164c99b Mon Sep 17 00:00:00 2001
From: sawada_shinnosuke <sawada_shinnosuke@cyberagent.co.jp>
Date: Mon, 26 Sep 2016 12:44:23 +0900
Subject: [PATCH] use defer prepareing for panic/recover

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

diff --git a/engine.go b/engine.go
index 9bbc511a..286aa417 100644
--- a/engine.go
+++ b/engine.go
@@ -848,6 +848,7 @@ func (engine *Engine) Having(conditions string) *Session {
 func (engine *Engine) autoMapType(v reflect.Value) *core.Table {
 	t := v.Type()
 	engine.mutex.Lock()
+	defer engine.mutex.Unlock()
 	table, ok := engine.Tables[t]
 	if !ok {
 		table = engine.mapType(v)
@@ -860,7 +861,6 @@ func (engine *Engine) autoMapType(v reflect.Value) *core.Table {
 			}
 		}
 	}
-	engine.mutex.Unlock()
 	return table
 }