Handle dead frame in menu-bar-non-minibuffer-window-p. (Bug#19728)

* menu-bar.el (menu-bar-non-minibuffer-window-p): Return nil when
the menu frame is dead.  (Bug#19728)

2 files changed, 12 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 51d47a791ad..6cdaf14abe2 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2015-01-31  Martin Rudalics  <rudalics@gmx.at>
+
+        * menu-bar.el (menu-bar-non-minibuffer-window-p): Return nil when
+        the menu frame is dead.  (Bug#19728)
+
 2015-01-30  Fabián Ezequiel Gallina  <fgallina@gnu.org>
 
         python.el: Handle tabs in python-indent-dedent-line.
diff --git a/lisp/menu-bar.el b/lisp/menu-bar.el
index 25d41dcdd85..e82c089850a 100644
--- a/lisp/menu-bar.el
+++ b/lisp/menu-bar.el
@@ -1737,12 +1737,14 @@ The menu frame is the frame for which we are updating the menu."
          (frame-visible-p menu-frame))))
 
 (defun menu-bar-non-minibuffer-window-p ()
-  "Return non-nil if selected window of the menu frame is not a minibuf window.
-
-See the documentation of `menu-bar-menu-frame-live-and-visible-p'
-for the definition of the menu frame."
+  "Return non-nil if the menu frame's selected window is no minibuffer window.
+Return nil if the menu frame is dead or its selected window is a
+minibuffer window.  The menu frame is the frame for which we are
+updating the menu."
   (let ((menu-frame (or menu-updating-frame (selected-frame))))
-    (not (window-minibuffer-p (frame-selected-window menu-frame)))))
+    (and (frame-live-p menu-frame)
+         (not (window-minibuffer-p
+               (frame-selected-window menu-frame))))))
 
 (defun kill-this-buffer ()      ; for the menu bar
   "Kill the current buffer.