handlers/email: Fix mutex issue

Author: Madouura

handlers/email/email.go

@@ -168,26 +168,25 @@ func (email *Email) Log(e log.Entry) {
 	email.rw.RLock()
 
 	if !email.enabled {
+		email.rw.RUnlock()
 		return
 	}
 
-	email.rw.RUnlock()
-
 	email.once.Do(func() {
 		email.formatter = email.formatFunc(email)
 	})
 
+	d := gomail.NewDialer(email.host, email.port, email.username, email.password)
+
+	email.rw.RUnlock()
+
 	var s gomail.SendCloser
 	var err error
 	var open bool
 	var alreadyTriedSending bool
 	var message *gomail.Message
 	var count uint8
 
-	email.rw.RLock()
-	d := gomail.NewDialer(email.host, email.port, email.username, email.password)
-	email.rw.RUnlock()
-
 	for {
 		count = 0
 		alreadyTriedSending = false