menubutton: don't dereference NULL GdkEvent

Since we explictly call popup_menu with NULL when it's
keyboard-activated, we need to be careful and not access event->device
without checking for event != NULL before.

diff --git a/gtk/gtkmenubutton.c b/gtk/gtkmenubutton.c
index 4c1a2f1efb78f78f9b6153b45da634e60ad5c9ea..63bea8c824d86acde5b20f405cf6123f8052d391 100644 (file)
--- a/gtk/gtkmenubutton.c
+++ b/gtk/gtkmenubutton.c
@@ -307,7 +307,9 @@ popup_menu (GtkMenuButton  *menu_button,
         break;
   }
 
-  gtk_menu_popup_for_device (GTK_MENU (priv->menu), event->device, NULL, NULL,
+  gtk_menu_popup_for_device (GTK_MENU (priv->menu),
+                             event ? event->device : NULL,
+                             NULL, NULL,
                              func,
                              GTK_WIDGET (menu_button),
                              NULL,