[gtk-vnc] Chain up to parent vfunc in VncDisplay::realize_event

[Christophe Fergeau <teuf src gnome org>]

commit cb2d10e5a3611f287ddf7d1c5fa9ba90c39bb6ce
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Fri Sep 12 15:18:35 2014 +0200

    Chain up to parent vfunc in VncDisplay::realize_event
    
    Without this, gtk-vnc will abort when establishing a VNC connection.
    This regression was introduced in 910c4d40e.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736560

 src/vncdisplay.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/vncdisplay.c b/src/vncdisplay.c
index 6f114a0..9744c19 100644
--- a/src/vncdisplay.c
+++ b/src/vncdisplay.c
@@ -1039,6 +1039,8 @@ static void realize_event(GtkWidget *widget)
     VncDisplay *obj = VNC_DISPLAY(widget);
     VncDisplayPrivate *priv = obj->priv;
 
+    GTK_WIDGET_CLASS (vnc_display_parent_class)->realize (widget);
+
     gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(obj)),
                           priv->remote_cursor ? priv->remote_cursor : priv->null_cursor);
 }