[gtk+] gtk: Fix return annotation of gtk_selection_data_get_text

[Rico Tzschichholz <ricotz src gnome org>]

commit e317117f030858c86c39ff968eb2d8ad2459755b
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Aug 20 08:54:12 2014 +0200

    gtk: Fix return annotation of gtk_selection_data_get_text

 gtk/gtkselection.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkselection.c b/gtk/gtkselection.c
index 380a101..1206b68 100644
--- a/gtk/gtkselection.c
+++ b/gtk/gtkselection.c
@@ -1597,7 +1597,7 @@ gtk_selection_data_set_text (GtkSelectionData     *selection_data,
  * 
  * Gets the contents of the selection data as a UTF-8 string.
  * 
- * Returns: (type utf8): if the selection data contained a
+ * Returns: (type utf8) (nullable) (transfer full): if the selection data contained a
  *   recognized text type and it could be converted to UTF-8, a newly
  *   allocated string containing the converted text, otherwise %NULL.
  *   If the result is non-%NULL it must be freed with g_free().