bug#3971: 23.1.50; linum-mode kills right margin

linum-mode kills the right margin. It should not touch it since it
does not use it. The following patch fixes this:

Index: linum.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/linum.el,v
retrieving revision 1.11
diff -c -b -r1.11 linum.el
*** linum.el	18 Jan 2009 01:45:38 -0000	1.11
--- linum.el	30 Jul 2009 04:35:10 -0000
***************
*** 108,114 ****
    (mapc #'delete-overlay linum-overlays)
    (setq linum-overlays nil)
    (dolist (w (get-buffer-window-list (current-buffer) nil t))
!     (set-window-margins w 0)))

  (defun linum-update-current ()
    "Update line numbers for the current buffer."
--- 108,114 ----
    (mapc #'delete-overlay linum-overlays)
    (setq linum-overlays nil)
    (dolist (w (get-buffer-window-list (current-buffer) nil t))
!     (set-window-margins w 0 (cdr (window-margins w)))))

  (defun linum-update-current ()
    "Update line numbers for the current buffer."
***************
*** 163,169 ****
              (overlay-put ov 'linum-str str))))
        (forward-line)
        (setq line (1+ line)))
!     (set-window-margins win width)))

  (defun linum-after-change (beg end len)
    ;; update overlays on deletions, and after newlines are inserted
--- 163,169 ----
              (overlay-put ov 'linum-str str))))
        (forward-line)
        (setq line (1+ line)))
!     (set-window-margins win width (cdr (window-margins win)))))

  (defun linum-after-change (beg end len)
    ;; update overlays on deletions, and after newlines are inserted



In GNU Emacs 23.1.50.1 (i386-mingw-nt5.1.2600)
 of 2009-06-30
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags
-Ic:/g/include -fno-crossjumping'