- prevented crash because of trying to close and already closed notify-window.

src/notify-window.lisp

@@ -54,7 +54,6 @@
       (let ((remove-win-event (make-instance 'program-events:remove-notify-user-event
                                              :priority program-events:+maximum-event-priority+
                                              :payload  object)))
-        (win-close object)
         (program-events:push-event remove-win-event)))
     (decf (life object) dt)))
 

src/program-events.lisp

@@ -429,6 +429,7 @@
 
 (defmethod process-event ((object remove-notify-user-event))
   (let ((win (payload object)))
+    (windows:win-close win)
     (mtree:remove-child specials:*main-window* win)))
 
 (defclass change-window-title-event (program-event)