master 843dc435f7: Be more resilient against invalid headers in mml-generate-mime

[Lars Ingebrigtsen]

branch: master
commit 843dc435f797e6804663ae074d3d88993c4cd8a4
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Be more resilient against invalid headers in mml-generate-mime
    
    * lisp/gnus/mml.el (mml-generate-mime): Don't bug out when called
    with invalid headers (bug#55014).
---
 lisp/gnus/mml.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lisp/gnus/mml.el b/lisp/gnus/mml.el
index 5a52602506..093e582ea7 100644
--- a/lisp/gnus/mml.el
+++ b/lisp/gnus/mml.el
@@ -500,7 +500,8 @@ type detected."
       (when (and (consp (car cont))
                 (= (length cont) 1)
                 content-type)
-       (setcdr (assq 'type (cdr (car cont))) content-type))
+        (when-let ((spec (assq 'type (cdr (car cont)))))
+         (setcdr spec content-type)))
       (when (fboundp 'libxml-parse-html-region)
        (setq cont (mapcar #'mml-expand-all-html-into-multipart-related cont)))
       (prog1