[gnome-settings-daemon] wacom: Fix critical compiler warnings

[Colin Walters <walters src gnome org>]

commit 1d53a9c7d9468b7c375be04edfb20ff318a76096
Author: Colin Walters <walters verbum org>
Date:   Mon Nov 25 15:10:57 2013 -0500

    wacom: Fix critical compiler warnings
    
    If we don't have this #include, we get
    -Wimplicit-function-declaration.

 plugins/wacom/gsd-wacom-manager.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/wacom/gsd-wacom-manager.c b/plugins/wacom/gsd-wacom-manager.c
index 6101747..5b4484f 100644
--- a/plugins/wacom/gsd-wacom-manager.c
+++ b/plugins/wacom/gsd-wacom-manager.c
@@ -48,6 +48,7 @@
 #include "gsd-keygrab.h"
 #include "gnome-settings-plugin.h"
 #include "gnome-settings-profile.h"
+#include "gnome-settings-bus.h"
 #include "gsd-wacom-manager.h"
 #include "gsd-wacom-device.h"
 #include "gsd-wacom-oled.h"