[metacity] theme-viewer: properly center window changing composited

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 970b69c97a03628d90736297fa2993acf25e73bd
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Mar 4 16:11:18 2017 +0200

    theme-viewer: properly center window changing composited

 theme-viewer/theme-viewer-window.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/theme-viewer/theme-viewer-window.c b/theme-viewer/theme-viewer-window.c
index bbf10b3..6d526d7 100644
--- a/theme-viewer/theme-viewer-window.c
+++ b/theme-viewer/theme-viewer-window.c
@@ -821,6 +821,8 @@ composited_state_set_cb (GtkSwitch         *widget,
 
   meta_theme_set_composited (window->theme, active);
 
+  update_frame_borders (window);
+
   gtk_widget_queue_draw (window->theme_box);
 }