docs: fix GtkWidget::size-allocate description

The documentation for the GtkWidget::size-allocate signal is missing the
description of the "allocation" parameter. Add the missing description
to the parameter.

https://bugzilla.gnome.org/show_bug.cgi?id=726179

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index d3d78ddb1f4be3c3d8a3030c197983e1a2c858fe..4e26f71e653d34564805c0734134a48912c8abf6 100644 (file)
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -1779,7 +1779,7 @@ G_GNUC_END_IGNORE_DEPRECATIONS
   /**
    * GtkWidget::size-allocate:
    * @widget: the object which received the signal.
-   * @allocation:
+   * @allocation: the region which has been allocated to the widget.
    */
   widget_signals[SIZE_ALLOCATE] =
     g_signal_new (I_("size-allocate"),