[gtk+/gtk-2-24] Don't use guint32 with XChangeProperty

[Emilio Pozuelo Monfort <epm src gnome org>]

commit 9b111339eb20c275525fff5775aff07cee4106a3
Author: James Clarke <jrtc27 jrtc27 com>
Date:   Tue Jan 24 08:35:28 2017 +0000

    Don't use guint32 with XChangeProperty
    
    Fixes bug 777683.

 gdk/x11/gdkwindow-x11.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/x11/gdkwindow-x11.c b/gdk/x11/gdkwindow-x11.c
index 837f605..887a5ef 100644
--- a/gdk/x11/gdkwindow-x11.c
+++ b/gdk/x11/gdkwindow-x11.c
@@ -5575,7 +5575,7 @@ gdk_window_set_opacity (GdkWindow *window,
                        gdouble    opacity)
 {
   GdkDisplay *display;
-  guint32 cardinal;
+  gulong cardinal;
   
   g_return_if_fail (GDK_IS_WINDOW (window));