In check_minibuf_window don't abort if no window was found (Bug#15247).

* frame.c (check_minibuf_window): Don't abort if no window was
found (Bug#15247).

src/ChangeLog

+2013-09-02  Martin Rudalics  <rudalics@gmx.at>
+
+	* frame.c (check_minibuf_window): Don't abort if no window was
+	found (Bug#15247).
+
 2013-09-02  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	Use XGetMotionEvents to ask the last mouse motion time from X server.

src/frame.c

@@ -1137,9 +1137,8 @@ check_minibuf_window (Lisp_Object frame, int select)
 	      }
 	  }
 
-      if (!WINDOWP (window))
-	emacs_abort ();
-      else
+      /* Don't abort if no window was found (Bug#15247).  */
+      if (WINDOWP (window))
 	{
 	  /* Use set_window_buffer instead of Fset_window_buffer (see
 	     discussion of bug#11984, bug#12025, bug#12026).  */