[gtk+] wayland: Add missing symbol export

[Rob Bradford <rbradford src gnome org>]

commit bfe87c44a84c6ef2689b9eab41b9a3b2a5c70649
Author: Rob Bradford <rob linux intel com>
Date:   Wed Jun 26 15:09:51 2013 +0100

    wayland: Add missing symbol export
    
    gdk_wayland_window_set_use_custom_surface was not being exported
    correctly.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695861

 gdk/wayland/gdkwaylandwindow.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gdk/wayland/gdkwaylandwindow.h b/gdk/wayland/gdkwaylandwindow.h
index 0ce2c31..9619a66 100644
--- a/gdk/wayland/gdkwaylandwindow.h
+++ b/gdk/wayland/gdkwaylandwindow.h
@@ -50,6 +50,7 @@ struct wl_surface       *gdk_wayland_window_get_wl_surface       (GdkWindow *win
 GDK_AVAILABLE_IN_ALL
 struct wl_shell_surface *gdk_wayland_window_get_wl_shell_surface (GdkWindow *window);
 
+GDK_AVAILABLE_IN_ALL
 void                     gdk_wayland_window_set_use_custom_surface (GdkWindow *window);
 
 G_END_DECLS