[gtk/gtk-3-22] deprecated: Cast g_object_ref() to the right type

[Emmanuele Bassi <ebassi src gnome org>]

commit 855e4cb88ed98f651b26b1e71518979e6fd18eb3
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Feb 11 15:02:30 2018 +0000

    deprecated: Cast g_object_ref() to the right type
    
    In GLib 2.56, g_object_ref() will check that you're assigning the return
    value to a variable of the same type you're passing in.

 gtk/deprecated/gtkuimanager.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/deprecated/gtkuimanager.c b/gtk/deprecated/gtkuimanager.c
index a0b4129376..6ee242dd5c 100644
--- a/gtk/deprecated/gtkuimanager.c
+++ b/gtk/deprecated/gtkuimanager.c
@@ -740,7 +740,7 @@ gtk_ui_manager_buildable_construct_child (GtkBuildable *buildable,
   g_signal_connect (widget, "hierarchy-changed",
                    G_CALLBACK (child_hierarchy_changed_cb),
                    GTK_UI_MANAGER (buildable));
-  return g_object_ref (widget);
+  return G_OBJECT (g_object_ref (widget));
 }
 
 static void