[gtk+/sdk/2965: 7/30] dnd: fix a compile warning

[Jasper St. Pierre <jstpierre src gnome org>]

commit 546dfe750322f4049249bf2174732f158486d572
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Wed May 13 14:56:45 2015 -0700

    dnd: fix a compile warning
    
    When building without Wayland, the display variable would be set but not
    used.

 gtk/gtkdnd.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkdnd.c b/gtk/gtkdnd.c
index d2b3ca5..d0c1089 100644
--- a/gtk/gtkdnd.c
+++ b/gtk/gtkdnd.c
@@ -3101,7 +3101,9 @@ gtk_drag_set_icon_window (GdkDragContext *context,
                           gboolean        destroy_on_release)
 {
   GtkDragSourceInfo *info;
+#ifdef GDK_WINDOWING_WAYLAND
   GdkDisplay *display;
+#endif
 
   info = gtk_drag_get_source_info (context, FALSE);
   if (info == NULL)
@@ -3121,9 +3123,9 @@ gtk_drag_set_icon_window (GdkDragContext *context,
   info->hot_y = hot_y;
   info->destroy_icon = destroy_on_release;
 
+#ifdef GDK_WINDOWING_WAYLAND
   display = gdk_window_get_display (gdk_drag_context_get_source_window (context));
 
-#ifdef GDK_WINDOWING_WAYLAND
   if (GTK_IS_WINDOW (widget) && GDK_IS_WAYLAND_DISPLAY (display))
     {
       if (gtk_widget_get_realized (widget))