File 3e3158ce12741b58ce53f132b48f26438094886d.patch of Package gtk4

From 9b3fb66bd4568c05f4bd10bda7f6cc1d2ed6919e Mon Sep 17 00:00:00 2001
From: Alexander Mikhaylenko <alexm@gnome.org>
Date: Mon, 6 Mar 2023 05:36:16 +0400
Subject: [PATCH] widget: Use the correct template in dispose_template()

In derivable classes, the widget's class can be different from the one
dispose_template() was called for, which can lead to failing the
template != NULL check at best, undefined behavior at worst.

Since we already pass the correct GType into the function, just use that
instead.
---
 gtk/gtkwidget.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: gtk-4.10.0/gtk/gtkwidget.c
===================================================================
--- gtk-4.10.0.orig/gtk/gtkwidget.c
+++ gtk-4.10.0/gtk/gtkwidget.c
@@ -11180,7 +11180,8 @@ gtk_widget_dispose_template (GtkWidget *
   g_return_if_fail (GTK_IS_WIDGET (widget));
   g_return_if_fail (g_type_name (widget_type) != NULL);
 
-  GtkWidgetTemplate *template = GTK_WIDGET_GET_CLASS (widget)->priv->template;
+  GObjectClass *object_class = g_type_class_peek (widget_type);
+  GtkWidgetTemplate *template = GTK_WIDGET_CLASS (object_class)->priv->template;
   g_return_if_fail (template != NULL);
 
   /* Tear down the automatic child data */