[gtk/menubutton-no-button] Update gtkmenubutton.c

[Matthias Clasen <matthiasc src gnome org>]

commit c17da1e1437db9590dba0fbc9ca844b95be2cfdc
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat May 18 05:27:07 2019 +0000

    Update gtkmenubutton.c

 gtk/gtkmenubutton.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 7197a198bc..8d334e66d2 100644
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -1303,7 +1303,7 @@ gtk_menu_button_get_label (GtkMenuButton *menu_button)
   if (GTK_IS_BOX (child))
     {
       child = gtk_widget_get_first_child (child);
-      return gtk_label_get_label (GTK_LABEL (label));
+      return gtk_label_get_label (GTK_LABEL (child));
     }
 
   return NULL;