* lisp/mouse-drag.el: Use lexical-binding.

diff --git a/lisp/mouse-drag.el b/lisp/mouse-drag.el
index b2960a4ccd3437087f10cc273f41c2b0bce1ae8f..b424b6edfe8093cf9ceffecf2573d4c01be00cb0 100644 (file)
--- a/lisp/mouse-drag.el
+++ b/lisp/mouse-drag.el
@@ -1,4 +1,4 @@
-;;; mouse-drag.el --- use mouse-2 to do a new style of scrolling
+;;; mouse-drag.el --- use mouse-2 to do a new style of scrolling  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 1996-1997, 2001-2021 Free Software Foundation, Inc.