Bogus temporary frame created by Gnus

[Stefan Monnier]

When I do "O f" in Gnus, I'm first prompted for a file name, and then a new
frame is created that displays a temporary buffer that's immediately killed.
I think it's just a bug, which is fixed by the patch below.

Any objection?

Note that several other gnus-summary-save-in-* functions may suffer from the
same problem, but I don't have the time/energy to check them,


        Stefan


PS: If you can't reproduce the problem, it's probably because your
    pop-up-frames and special-display-regexp settings are different
    from mine.


--- orig/lisp/gnus/gnus-art.el
+++ mod/lisp/gnus/gnus-art.el
@@ -3314,7 +3314,7 @@
                  "Save %s in file:" filename
                  gnus-file-save-name gnus-newsgroup-name
                  gnus-current-headers 'gnus-newsgroup-last-file))
-  (gnus-eval-in-buffer-window gnus-save-article-buffer
+  (with-current-buffer gnus-save-article-buffer
     (save-excursion
       (save-restriction
        (widen)