bug#33384: [PATCH] Fix zone.el when window is at the bottom of the buffer

[deb0ch]

(window-end) returns the size of the buffer + 1 when the end of the
buffer is inside the window, whereas to get the end of the
buffer (buffer-substring) needs the size of the buffer and will throw
an error if given anything greater.
---
 lisp/play/zone.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/play/zone.el b/lisp/play/zone.el
index 4584d26f38..90340e74e9 100644
--- a/lisp/play/zone.el
+++ b/lisp/play/zone.el
@@ -109,7 +109,7 @@ If the element is a function or a list of a function and a 
number,
   (save-window-excursion
     (let ((f (selected-frame))
           (outbuf (get-buffer-create "*zone*"))
-          (text (buffer-substring (window-start) (window-end)))
+          (text (buffer-substring (window-start) (1- (window-end))))
           (wp (1+ (- (window-point)
                      (window-start)))))
       (put 'zone 'orig-buffer (current-buffer))
-- 
2.15.1 (Apple Git-101)