adding allow-none introspection metadata to pango_layout_set_font_description

diff --git a/pango/pango-layout.c b/pango/pango-layout.c
index ff84683..a10c08f 100644 (file)
--- a/pango/pango-layout.c
+++ b/pango/pango-layout.c
@@ -638,7 +638,7 @@ pango_layout_get_attributes (PangoLayout *layout)
 /**
  * pango_layout_set_font_description:
  * @layout: a #PangoLayout
- * @desc: the new #PangoFontDescription, or %NULL to unset the
+ * @desc: (allow-none): the new #PangoFontDescription, or %NULL to unset the
  *        current font description
  *
  * Sets the default font description for the layout. If no font