[gtk/wip/baedert/for-master: 9/13] headerbar: Don't update window buttons when unrealized

[Timm Bäder <baedert src gnome org>]

commit 3a06394fdeee7a968a2abfbd9a5fc3dce2aac4d2
Author: Timm Bäder <mail baedert org>
Date:   Tue Sep 10 14:18:20 2019 +0200

    headerbar: Don't update window buttons when unrealized
    
    It doesn't make much sense in that case and we will update them again
    when realizing.

 gtk/gtkheaderbar.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtkheaderbar.c b/gtk/gtkheaderbar.c
index 2503ca0738..d8ddc7d155 100644
--- a/gtk/gtkheaderbar.c
+++ b/gtk/gtkheaderbar.c
@@ -290,6 +290,9 @@ _gtk_header_bar_update_window_buttons (GtkHeaderBar *bar)
   gboolean shown_by_shell;
   gboolean is_sovereign_window;
 
+  if (!gtk_widget_get_realized (widget))
+    return;
+
   toplevel = GTK_WIDGET (gtk_widget_get_root (widget));
   if (!GTK_IS_WINDOW (toplevel))
     return;