In temp_output_buffer_show make sure window returned by display_buffer is live (Bug#15213).

* window.c (temp_output_buffer_show): Make sure window returned
by display_buffer is live (Bug#15213).

src/ChangeLog

+2013-08-31  Martin Rudalics  <rudalics@gmx.at>
+
+	* window.c (temp_output_buffer_show): Make sure window returned
+	by display_buffer is live (Bug#15213).
+
 2013-08-30  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	Minor cleanup to avoid forward declarations.

src/window.c

@@ -3341,10 +3341,8 @@ temp_output_buffer_show (register Lisp_Object buf)
 
   if (!NILP (Vtemp_buffer_show_function))
     call1 (Vtemp_buffer_show_function, buf);
-  else
+  else if (WINDOW_LIVE_P (window = display_buffer (buf, Qnil, Qnil)))
     {
-      window = display_buffer (buf, Qnil, Qnil);
-
       if (!EQ (XWINDOW (window)->frame, selected_frame))
 	Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
       Vminibuf_scroll_window = window;