g-i: mark gtk_text_iter_get_child_anchor as nullable

diff --git a/gtk/gtktextiter.c b/gtk/gtktextiter.c
index fd96ca6b7290ed1de5d2f981946ebab31eae8308..d3a094826f77d4d77e3a64f923ca4227ce2195b3 100644 (file)
--- a/gtk/gtktextiter.c
+++ b/gtk/gtktextiter.c
@@ -1056,7 +1056,7 @@ gtk_text_iter_get_paintable (const GtkTextIter *iter)
  *
  * Otherwise, %NULL is returned.
  *
- * Returns: (transfer none): the anchor at @iter
+ * Returns: (transfer none) (nullable): the anchor at @iter
  **/
 GtkTextChildAnchor*
 gtk_text_iter_get_child_anchor (const GtkTextIter *iter)