winex11: Don't unmap off-screen windows on PropertyNotify events.

dlls/winex11.drv/window.c

@@ -2501,7 +2501,7 @@ void CDECL X11DRV_WindowPosChanged( HWND hwnd, HWND insert_after, UINT swp_flags
     if (data->mapped && event_type != ReparentNotify)
     {
         if (((swp_flags & SWP_HIDEWINDOW) && !(new_style & WS_VISIBLE)) ||
-            (event_type != ConfigureNotify &&
+            (!event_type &&
              !is_window_rect_mapped( rectWindow ) && is_window_rect_mapped( &old_window_rect )))
             unmap_window( display, data );
     }