[gtk+/gtk-3-22] Add nullable return annotation to gtk_text_mark_get_name

[Matthias Clasen <matthiasc src gnome org>]

commit 5edeba5965ea615186066527da4613c9b6644ad0
Author: Iñaki García Etxebarria <garetxe gmail com>
Date:   Sat Apr 29 13:08:49 2017 +0200

    Add nullable return annotation to gtk_text_mark_get_name
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781936

 gtk/gtktextmark.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtktextmark.c b/gtk/gtktextmark.c
index dc8f78c..ba2544a 100644
--- a/gtk/gtktextmark.c
+++ b/gtk/gtktextmark.c
@@ -294,7 +294,7 @@ gtk_text_mark_get_visible (GtkTextMark *mark)
  * 
  * Returns the mark name; returns NULL for anonymous marks.
  * 
- * Returns: mark name
+ * Returns: (nullable): mark name
  **/
 const char *
 gtk_text_mark_get_name (GtkTextMark *mark)