[glib] Add missing GI annotation to g_content_type_guess_for_tree

[Pavel Holejsovsky <pholejs src gnome org>]

commit 79fd5ff80dcf086749e942ea3be9e4fa88317b09
Author: Pavel Holejsovsky <pholejs src gnome org>
Date:   Tue Dec 28 15:46:01 2010 +0100

    Add missing GI annotation to g_content_type_guess_for_tree

 gio/gcontenttype.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gio/gcontenttype.c b/gio/gcontenttype.c
index dfbe868..3856a2d 100644
--- a/gio/gcontenttype.c
+++ b/gio/gcontenttype.c
@@ -1651,8 +1651,8 @@ match_match (TreeMatch    *match,
  * This function is useful in the implementation of
  * g_mount_guess_content_type().
  *
- * Returns: (transfer full): an %NULL-terminated array of zero or more content types,
- *     or %NULL. Free with g_strfreev()
+ * Returns: (transfer full) (array zero-terminated=1): an %NULL-terminated
+ *     array of zero or more content types, or %NULL. Free with g_strfreev()
  *
  * Since: 2.18
  */