[gtk+] Fix a warning

[Matthias Clasen <matthiasc src gnome org>]

commit 5441ecd35026c4d1eca35e366b62f7b6b6862e45
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Feb 1 09:48:32 2011 -0500

    Fix a warning

 gdk/x11/gdkdevicemanager-xi2.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/x11/gdkdevicemanager-xi2.c b/gdk/x11/gdkdevicemanager-xi2.c
index b63b273..3f5a7be 100644
--- a/gdk/x11/gdkdevicemanager-xi2.c
+++ b/gdk/x11/gdkdevicemanager-xi2.c
@@ -1021,7 +1021,7 @@ gdk_x11_device_manager_xi2_translate_event (GdkEventTranslator *translator,
        * We need to override that with an XI2 device, since we are
        * using XI2.
        */
-      device = gdk_x11_device_manager_xi2_get_client_pointer (device_manager);
+      device = gdk_x11_device_manager_xi2_get_client_pointer ((GdkDeviceManager *)device_manager);
       gdk_event_set_device (event, gdk_device_get_associated_device (device));
 
       return TRUE;