[gtkmm] Gdk::ToplevelLayout: update for latest gtk4

[Andreas Persson <andreasp src gnome org>]

commit 5e3e3575a61d1072bf70f51f79fc81d15d3b1d1a
Author: Andreas Persson <andreasp56 outlook com>
Date:   Wed Dec 16 20:59:56 2020 +0100

    Gdk::ToplevelLayout: update for latest gtk4

 gdk/src/toplevellayout.hg | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gdk/src/toplevellayout.hg b/gdk/src/toplevellayout.hg
index 3465304c..d32fdac4 100644
--- a/gdk/src/toplevellayout.hg
+++ b/gdk/src/toplevellayout.hg
@@ -49,13 +49,13 @@ public:
   _WRAP_METHOD(void set_maximized(bool maximized = true), gdk_toplevel_layout_set_maximized)
   _WRAP_METHOD(void set_fullscreen(bool fullscreen = true, const Glib::RefPtr<Monitor>& monitor = {}),
     gdk_toplevel_layout_set_fullscreen)
-  _WRAP_METHOD(bool get_maximized() const, gdk_toplevel_layout_get_maximized)
-  _WRAP_METHOD(bool get_fullscreen() const, gdk_toplevel_layout_get_fullscreen)
+  _WRAP_METHOD(bool get_maximized(bool& maximize) const, gdk_toplevel_layout_get_maximized)
+  _WRAP_METHOD(bool get_fullscreen(bool& fullscreen) const, gdk_toplevel_layout_get_fullscreen)
   _WRAP_METHOD(Glib::RefPtr<Monitor> get_fullscreen_monitor(),
     gdk_toplevel_layout_get_fullscreen_monitor, refreturn)
   _WRAP_METHOD(Glib::RefPtr<const Monitor> get_fullscreen_monitor() const,
     gdk_toplevel_layout_get_fullscreen_monitor, refreturn, constversion)
-  _WRAP_METHOD(void set_resizable(bool resizable= true), gdk_toplevel_layout_set_resizable)
+  _WRAP_METHOD(void set_resizable(bool resizable = true), gdk_toplevel_layout_set_resizable)
   _WRAP_METHOD(bool get_resizable() const, gdk_toplevel_layout_get_resizable)
 };