gobject-2.0: Some cherry-picking from GIR generated binding

diff --git a/vapi/gobject-2.0.vapi b/vapi/gobject-2.0.vapi
index 77b2564554f2b4610a6ac2fe33c57f495502973e..57eebc535db0ae2ab2bf7d0b4dc284cba1b87ba2 100644 (file)
--- a/vapi/gobject-2.0.vapi
+++ b/vapi/gobject-2.0.vapi
@@ -643,8 +643,8 @@ namespace GLib {
                public unowned GLib.TypeClass? class_peek ();
                public unowned GLib.TypeClass? class_peek_static ();
                public unowned GLib.TypeClass? default_interface_peek ();
-               public GLib.TypeInterface default_interface_ref ();
-               public GLib.TypeClass class_ref ();
+               public unowned GLib.TypeInterface? default_interface_ref ();
+               public unowned GLib.TypeClass? class_ref ();
                public uint depth ();
                [Version (since = "2.34")]
                public void ensure ();