[gnome-color-manager] trivial: fix up a compile error with the patch from this morning

[Richard Hughes <rhughes src gnome org>]

commit 8485d7add61616e53391a702f61261736afce2c2
Author: Richard Hughes <richard hughsie com>
Date:   Sun Jun 20 12:33:09 2010 +0100

    trivial: fix up a compile error with the patch from this morning

 src/gcm-device-xrandr.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gcm-device-xrandr.c b/src/gcm-device-xrandr.c
index 7d24ae4..c40cd42 100644
--- a/src/gcm-device-xrandr.c
+++ b/src/gcm-device-xrandr.c
@@ -482,7 +482,7 @@ gcm_device_xrandr_is_primary (GcmDeviceXrandr *device_xrandr)
 
 	/* check we have an output */
 	output = gcm_screen_get_output_by_name (device_xrandr->priv->screen,
-						device_xrandr->priv->output_name, NULL);
+						device_xrandr->priv->native_device, NULL);
 	if (output == NULL)
 		goto out;