[gtk/gtk-3-24: 1/2] GdkWin32: Fix subclassing for GdkWin32Selection

[Luca Bacci <lbacci src gnome org>]

commit 8f0d580cf94708f4f2719831ccd625816637af00
Author: Luca Bacci <luca bacci982 gmail com>
Date:   Mon Sep 26 14:28:03 2022 +0200

    GdkWin32: Fix subclassing for GdkWin32Selection

 gdk/win32/gdkselection-win32.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gdk/win32/gdkselection-win32.h b/gdk/win32/gdkselection-win32.h
index c3ed6cd45e..0b024894eb 100644
--- a/gdk/win32/gdkselection-win32.h
+++ b/gdk/win32/gdkselection-win32.h
@@ -129,7 +129,8 @@ typedef struct _GdkWin32SelectionClass GdkWin32SelectionClass;
  */
 struct _GdkWin32Selection
 {
-  GObject *parent_instance;
+  GObject parent_instance;
+
   GHashTable *sel_prop_table;
   GdkSelProp *dropfiles_prop;
   /* We store the owner of each selection in this table. Obviously, this only