[pango] Fixing pango_layout_iter_get_line_yrange documentation and instropection annotation

[Alberto Ruiz <aruiz src gnome org>]

commit 6ed0fec2a65ea767c717998f8b89038275e721f0
Author: Alberto Ruiz <aruiz gnome org>
Date:   Mon Apr 25 16:07:01 2011 +0100

    Fixing pango_layout_iter_get_line_yrange documentation and instropection annotation

 pango/pango-layout.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pango/pango-layout.c b/pango/pango-layout.c
index b5e5037..ee9584e 100644
--- a/pango/pango-layout.c
+++ b/pango/pango-layout.c
@@ -6143,8 +6143,8 @@ pango_layout_iter_get_line_extents (PangoLayoutIter *iter,
 /**
  * pango_layout_iter_get_line_yrange:
  * @iter: a #PangoLayoutIter
- * @y0_: start of line
- * @y1_: end of line
+ * @y0_: (out) (allow-none): start of line, or %NULL
+ * @y1_: (out) (allow-none): end of line, or %NULL
  *
  * Divides the vertical space in the #PangoLayout being iterated over
  * between the lines in the layout, and returns the space belonging to