[libdazzle] panel: hide handles when animations are disabled

[Christian Hergert <chergert src gnome org>]

commit e80bd39a7b1332e83a6479328e8946ef5b030961
Author: Christian Hergert <chergert redhat com>
Date:   Wed Sep 11 11:42:57 2019 -0700

    panel: hide handles when animations are disabled
    
    Fixes #46

 src/panel/dzl-dock-bin.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/panel/dzl-dock-bin.c b/src/panel/dzl-dock-bin.c
index e1a3a5f..8b7391e 100644
--- a/src/panel/dzl-dock-bin.c
+++ b/src/panel/dzl-dock-bin.c
@@ -1060,6 +1060,8 @@ dzl_dock_bin_child_size_allocate (DzlDockBin      *self,
         gdk_window_move_resize (child->handle,
                                 handle_alloc.x, handle_alloc.y,
                                 handle_alloc.width, handle_alloc.height);
+      else if (child->handle)
+        gdk_window_hide (child->handle);
 
       gtk_widget_size_allocate (child->widget, &child_alloc);
     }