[gtk/gtk-3-24] expander: Documentation update

[Matthias Clasen <matthiasc src gnome org>]

commit 13f6790fdbcad36c35b1c95bebe1d47e1953dc93
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Nov 7 10:40:47 2020 -0500

    expander: Documentation update
    
    Document GtkExpander:label-fill as ignored.
    
    Fixes: #3331

 gtk/gtkexpander.c | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/gtk/gtkexpander.c b/gtk/gtkexpander.c
index b47f485934..e2d6cec68b 100644
--- a/gtk/gtkexpander.c
+++ b/gtk/gtkexpander.c
@@ -353,6 +353,13 @@ gtk_expander_class_init (GtkExpanderClass *klass)
                                                         GTK_TYPE_WIDGET,
                                                         GTK_PARAM_READWRITE));
 
+  /**
+   * GtkExpander:label-fill:
+   *
+   * Whether the label widget should fill all available horizontal space.
+   *
+   * Note that this property is ignored since 3.20.
+   */
   g_object_class_install_property (gobject_class,
                                    PROP_LABEL_FILL,
                                    g_param_spec_boolean ("label-fill",
@@ -1636,6 +1643,8 @@ gtk_expander_get_label_widget (GtkExpander *expander)
  * Sets whether the label widget should fill all available
  * horizontal space allocated to @expander.
  *
+ * Note that this function has no effect since 3.20.
+ *
  * Since: 2.22
  */
 void