[gtk/ebassi/for-master: 1/11] Handle empty stack pages when creating an ATContext

[Emmanuele Bassi <ebassi src gnome org>]

commit 5d29cb780e0492eb072ffa20fad35643fd8d7419
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Nov 12 16:48:03 2020 +0000

    Handle empty stack pages when creating an ATContext
    
    If we don't have a widget inside GtkStackPage, we should use the default
    GdkDisplay.

 gtk/gtkstack.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/gtk/gtkstack.c b/gtk/gtkstack.c
index 7e92686c1c..bd4673bc62 100644
--- a/gtk/gtkstack.c
+++ b/gtk/gtkstack.c
@@ -228,7 +228,12 @@ gtk_stack_page_accessible_get_at_context (GtkAccessible *accessible)
   if (page->at_context == NULL)
     {
       GtkAccessibleRole role = GTK_ACCESSIBLE_ROLE_TAB_PANEL;
-      GdkDisplay *display = gtk_widget_get_display (page->widget);
+      GdkDisplay *display;
+
+      if (page->widget != NULL)
+        display = gtk_widget_get_display (page->widget);
+      else
+        display = gdk_display_get_default ();
 
       page->at_context = gtk_at_context_create (role, accessible, display);
     }