Fix Help functions for clicks on tool bar and tab bar

* lisp/mouse.el (mouse-minibuffer-check): Don't assume posn-window
returns a window.  (Bug#5199)

diff --git a/lisp/mouse.el b/lisp/mouse.el
index bb47d04a3a862b2ff1af5928310dd5bd090ec372..bcb58d153a836c8aba5190369253e52ef48d88ba 100644 (file)
--- a/lisp/mouse.el
+++ b/lisp/mouse.el
@@ -571,7 +571,8 @@ This is the keyboard interface to \\[context-menu-map]."
 
 (defun mouse-minibuffer-check (event)
   (let ((w (posn-window (event-start event))))
-    (and (window-minibuffer-p w)
+    (and (windowp w)
+         (window-minibuffer-p w)
         (not (minibuffer-window-active-p w))
         (user-error "Minibuffer window is not active")))
   ;; Give temporary modes such as isearch a chance to turn off.