emacs: notmuch-wash.el: require diff-mode at beginning of code

That's what we usually do.  Also do not declare variable
`diff-file-header-re' because it is defined in `diff-mode.el',
which we always require.

diff --git a/emacs/notmuch-wash.el b/emacs/notmuch-wash.el
index d613e04c552bc418df74ad560f2532a05f65d65f..653ecc2ae7d5d4e07ff8a87c9ed95315fb3c30bb 100644 (file)
--- a/emacs/notmuch-wash.el
+++ b/emacs/notmuch-wash.el
@@ -24,6 +24,7 @@
 ;;; Code:
 
 (require 'coolj)
+(require 'diff-mode)
 (require 'notmuch-lib)
 
 (declare-function notmuch-show-insert-bodypart "notmuch-show"
@@ -341,10 +342,6 @@ the wrapped text are maintained."
 
 ;;;; Convert Inline Patches
 
-(require 'diff-mode)
-
-(defvar diff-file-header-re) ; From `diff-mode.el'.
-
 (defun notmuch-wash-subject-to-filename (subject &optional maxlen)
   "Convert a mail SUBJECT into a filename.