gtk: mark MenuButton::get_label/get_icon_name as nullable

diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 370956da85363fdf98e8d12e5d1116e28fe67d38..67c32365084f601982479e1b9378fd4599def91e 100644 (file)
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -1059,7 +1059,7 @@ gtk_menu_button_set_icon_name (GtkMenuButton *menu_button,
  *
  * Gets the name of the icon shown in the button.
  *
- * Returns: the name of the icon shown in the button
+ * Returns: (nullable): the name of the icon shown in the button
  */
 const char *
 gtk_menu_button_get_icon_name (GtkMenuButton *menu_button)
@@ -1182,7 +1182,7 @@ gtk_menu_button_set_label (GtkMenuButton *menu_button,
  *
  * Gets the label shown in the button
  *
- * Returns: the label shown in the button
+ * Returns: (nullable): the label shown in the button
  */
 const char *
 gtk_menu_button_get_label (GtkMenuButton *menu_button)