Fix a string-as-unibyte in Gnus

* lisp/gnus/gnus-art.el (gnus-article-browse-html-parts): Get rid
of a string-as-unibyte.

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/gnus/gnus-art.el b/lisp/gnus/gnus-art.el
index ed6e77fb329..c153d94f3c3 100644
--- a/lisp/gnus/gnus-art.el
+++ b/lisp/gnus/gnus-art.el
@@ -2921,7 +2921,8 @@ message header will be added to the bodies of the \"text/html\" parts."
                                          (encode-coding-string
                                           title coding))
                                  body content))
-                       (setq eheader (string-as-unibyte (buffer-string))
+                       (setq eheader (encode-coding-string
+                                      (buffer-string) 'utf-8)
                              body content)))
                    (erase-buffer)
                    (mm-disable-multibyte)