bug#21681: [PATCH] Fix formatting of lexical-binding at eof warning

[Noam Postavsky <npostavs@users.sourceforge.net>]

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I see in the mean time that Glen Morris has changed :warning to 'files
as part of a general display-warnings fix ("Fix some display-warning
usage." 741d0afe021fbe0ff4f3933242526c684ed8c806)

So can we just fix the filename part (see attached) already, surely
this silly bug has been open long enough.

Before:

Warning (files): : ‘lexical-binding’ at end of file unreliable

After:

Warning (files): foo.el: ‘lexical-binding’ at end of file unreliable

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From 29eba8cc81d3151f2ed2e7791c7a81205edb4687 Mon Sep 17 00:00:00 2001
From: Noam Postavsky <npostavs@gmail.com>
Date: Sun, 24 Jan 2016 11:17:45 -0500
Subject: [PATCH] Fix lexical binding at eof warning

* files.el (hack-local-variables): Get buffer name from the
  visiting buffer.
---
 lisp/files.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/files.el b/lisp/files.el
index 5a15c71..051bfc6 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -3426,7 +3426,7 @@ local variables, but directory-local variables may still be applied."
                                   (format-message
                                    "%s: `lexical-binding' at end of file unreliable"
                                    (file-name-nondirectory
-                                    (or buffer-file-name ""))))))
+                                    (or (buffer-file-name thisbuf) ""))))))
 			      (t
 			       (ignore-errors
 				 (push (cons (if (eq var 'eval)
-- 
2.6.2.windows.1