fix gofmt error

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

modules/lfs/content_store.go

@@ -90,5 +90,5 @@ func transformKey(key string) string {
 		return key
 	}
 
-	return filepath.Join(key[0:2], key[2:4], key[4:len(key)])
+	return filepath.Join(key[0:2], key[2:4], key[4:])
 }

modules/mailer/mailer.go

@@ -220,12 +220,12 @@ func (s *sendmailSender) Send(from string, to []string, msg io.WriterTo) error {
 		return err
 	}
 
-	_,err = msg.WriteTo(pipe)
+	_, err = msg.WriteTo(pipe)
 
 	// we MUST close the pipe or sendmail will hang waiting for more of the message
 	// Also we should wait on our sendmail command even if something fails
 	closeError = pipe.Close()
-	waitError =  cmd.Wait()
+	waitError = cmd.Wait()
 	if err != nil {
 		return err
 	} else if closeError != nil {
@@ -263,7 +263,6 @@ func NewContext() {
 		return
 	}
 
-
 	if setting.MailService.UseSendmail {
 		Sender = &sendmailSender{}
 	} else {