Add missing allow-none for st_bin_set_child

https://bugzilla.gnome.org/show_bug.cgi?id=599442

diff --git a/src/st/st-bin.c b/src/st/st-bin.c
index 4c862b62a3cc3f99abcc162c49d151e809091d3c..48347b6ba311c933d83f058de4f974b77435475d 100644 (file)
--- a/src/st/st-bin.c
+++ b/src/st/st-bin.c
@@ -545,7 +545,7 @@ st_bin_new (void)
 /**
  * st_bin_set_child:
  * @bin: a #StBin
- * @child: a #ClutterActor, or %NULL
+ * @child: (allow-none): a #ClutterActor, or %NULL
  *
  * Sets @child as the child of @bin.
  *