[gtk+] menu item: Use GdkEvent API

[Carlos Garnacho <carlosg src gnome org>]

commit d7ccf36d71ca82964eb4a183a334ac158ed70787
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Aug 26 10:55:52 2017 -0400

    menu item: Use GdkEvent API

 gtk/gtkmenuitem.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkmenuitem.c b/gtk/gtkmenuitem.c
index 9deb8b4..efddab5 100644
--- a/gtk/gtkmenuitem.c
+++ b/gtk/gtkmenuitem.c
@@ -1129,10 +1129,13 @@ gtk_menu_item_enter (GtkWidget        *widget,
                      GdkEventCrossing *event)
 {
   GtkWidget *menu_shell;
+  GdkCrossingMode mode;
 
-  if (event->mode == GDK_CROSSING_GTK_GRAB ||
-      event->mode == GDK_CROSSING_GTK_UNGRAB ||
-      event->mode == GDK_CROSSING_STATE_CHANGED)
+  gdk_event_get_crossing_mode ((GdkEvent *)event, &mode);
+
+  if (mode == GDK_CROSSING_GTK_GRAB ||
+      mode == GDK_CROSSING_GTK_UNGRAB ||
+      mode == GDK_CROSSING_STATE_CHANGED)
     return GDK_EVENT_STOP;
 
   if (gdk_event_get_device ((GdkEvent*) event) ==