[gtk+] docs: gtk_window_group_get_current_device_grab() was added in 3.0

[Javier Jardón <jjardon src gnome org>]

commit f730af8360b8785317f5ff5ad75961928c155157
Author: Javier Jardón <jjardon gnome org>
Date:   Wed Aug 18 05:29:17 2010 +0200

    docs: gtk_window_group_get_current_device_grab() was added in 3.0

 gtk/gtkwindow.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index f2230c9..6529349 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -7952,7 +7952,9 @@ _gtk_window_group_remove_device_grab (GtkWindowGroup *window_group,
  * Returns the current grab widget for @device, or %NULL if none.
  *
  * Returns: The grab widget, or %NULL
- **/
+ *
+ * Since: 3.0
+ */
 GtkWidget *
 gtk_window_group_get_current_device_grab (GtkWindowGroup *window_group,
                                           GdkDevice      *device)