g-i: mark gtk_text_iter_get_paintable as nullable

diff --git a/gtk/gtktextiter.c b/gtk/gtktextiter.c
index d3a094826f77d4d77e3a64f923ca4227ce2195b3..7da46fda8c4706c7a5f73fb08c5668d6835f803d 100644 (file)
--- a/gtk/gtktextiter.c
+++ b/gtk/gtktextiter.c
@@ -1025,7 +1025,7 @@ gtk_text_iter_get_visible_text (const GtkTextIter  *start,
  *
  * Otherwise, %NULL is returned.
  *
- * Returns: (transfer none): the paintable at @iter
+ * Returns: (transfer none) (nullable): the paintable at @iter
  **/
 GdkPaintable *
 gtk_text_iter_get_paintable (const GtkTextIter *iter)