* lisp/mail/mail-prsvr.el: Use lexical-binding.

diff --git a/lisp/mail/mail-prsvr.el b/lisp/mail/mail-prsvr.el
index 9023c00a66e5a249c3b9982201c2fbd06fdb63b4..7c67c49b0b4de84c2f9faf08a70d423cc84df4a6 100644 (file)
--- a/lisp/mail/mail-prsvr.el
+++ b/lisp/mail/mail-prsvr.el
@@ -1,4 +1,4 @@
-;;; mail-prsvr.el --- Interface variables for parsing mail
+;;; mail-prsvr.el --- Interface variables for parsing mail  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 1999-2020 Free Software Foundation, Inc.