[gnome-control-center] wacom: Do not unref variant consumed by GSettings

[Joaquim Manuel Pereira Rocha <jrocha src gnome org>]

commit 3cf0addbfed46ff8e81cf7daba51536f40c25f24
Author: Joaquim Rocha <jrocha redhat com>
Date:   Fri May 17 12:22:28 2013 +0200

    wacom: Do not unref variant consumed by GSettings
    
    This avoids a critical warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700511

 panels/wacom/cc-wacom-page.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/panels/wacom/cc-wacom-page.c b/panels/wacom/cc-wacom-page.c
index 31f1882..5e10c5b 100644
--- a/panels/wacom/cc-wacom-page.c
+++ b/panels/wacom/cc-wacom-page.c
@@ -184,7 +184,6 @@ set_calibration (GsdWacomDevice *device,
        g_settings_set_value (settings,
                              "last-calibrated-resolution",
                              last_resolution);
-       g_clear_pointer (&last_resolution, g_variant_unref);
 }
 
 static void