[gnome-settings-daemon/gnome-3-4] wacom: Fix warning caused by new libwacom API

[Bastien Nocera <hadess src gnome org>]

commit 9b46248aad1fb6e05cfb6d8408a21763b391b134
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Sep 12 09:58:11 2012 +0100

    wacom: Fix warning caused by new libwacom API

 plugins/wacom/gsd-wacom-device.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/wacom/gsd-wacom-device.c b/plugins/wacom/gsd-wacom-device.c
index be23a66..c6b9852 100644
--- a/plugins/wacom/gsd-wacom-device.c
+++ b/plugins/wacom/gsd-wacom-device.c
@@ -1143,7 +1143,7 @@ gsd_wacom_device_update_from_db (GsdWacomDevice *device,
 
 	if (device->priv->type == WACOM_TYPE_STYLUS ||
 	    device->priv->type == WACOM_TYPE_ERASER) {
-		int *ids;
+		const int *ids;
 		int num_styli;
 		guint i;