bug#18813: 25.0.50; gnus start fails unless image.el is loaded in advance.

[Katsumi Yamaoka]

On Mon, 27 Oct 2014 12:31:01 +0900, Katsumi Yamaoka wrote:
> I see.  The image data are definitely unnecessary for a non-graphic
> display, so I'll add (display-graphic-p) to the tests.

I've added it within the gnus-mode-line-buffer-identification
function, since it should return image data when it is called in
a graphic display even if Gnus starts in a non-graphic display.

--- a/lisp/gnus.el
+++ b/lisp/gnus.el
@@ -327,7 +327,8 @@ be set in `.emacs' instead."
       (defun gnus-mode-line-buffer-identification (line)
        (let ((str (car-safe line))
              (load-path (append (mm-image-load-path) load-path)))
-         (if (and (stringp str)
+         (if (and (display-graphic-p)
+                  (stringp str)
                   (string-match "^Gnus:" str))
              (progn (add-text-properties
                      0 5