bug#27203: 25.2; rmail doesn't handle mime if rmail-mime-attachment-dirs-alist gives no valid destination

[Glenn Morris <rgm@gnu.org>]

Version: 26.1

Thanks, I applied the following:

commit 73635ed
Date:   Fri Jun 2 20:42:01 2017 -0400

    Small rmailmm fix (bug#27203)
    
    * lisp/mail/rmailmm.el (rmail-mime-insert-bulk):
    Fall back to HOME if no match in rmail-mime-attachment-dirs-alist.

diff --git a/lisp/mail/rmailmm.el b/lisp/mail/rmailmm.el
index c6b9cfd..1ffd466 100644
--- a/lisp/mail/rmailmm.el
+++ b/lisp/mail/rmailmm.el
@@ -817,12 +817,13 @@ directly."
 	 (bulk-data (aref tagline 1))
 	 (body (rmail-mime-entity-body entity))
 	 ;; Find the default directory for this media type.
-	 (directory (catch 'directory
-		      (dolist (entry rmail-mime-attachment-dirs-alist)
-			(when (string-match (car entry) (car content-type))
-			  (dolist (dir (cdr entry))
-			    (when (file-directory-p dir)
-			      (throw 'directory dir)))))))
+	 (directory (or (catch 'directory
+			  (dolist (entry rmail-mime-attachment-dirs-alist)
+			    (when (string-match (car entry) (car content-type))
+			      (dolist (dir (cdr entry))
+				(when (file-directory-p dir)
+				  (throw 'directory dir))))))
+			"~"))
 	 (filename (or (cdr (assq 'name (cdr content-type)))
 		       (cdr (assq 'filename (cdr content-disposition)))
 		       "noname"))