[gnome-color-manager] trivial: do not overwrite the GError

[Richard Hughes <rhughes src gnome org>]

commit efccd3d08069071f19c6ce7b001d190d2210321b
Author: Richard Hughes <richard hughsie com>
Date:   Tue Jul 20 09:59:17 2010 +0100

    trivial: do not overwrite the GError

 libcolor-glib/gcm-sensor.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libcolor-glib/gcm-sensor.c b/libcolor-glib/gcm-sensor.c
index bff64b4..240f481 100644
--- a/libcolor-glib/gcm-sensor.c
+++ b/libcolor-glib/gcm-sensor.c
@@ -364,6 +364,7 @@ gcm_sensor_get_ambient (GcmSensor *sensor, gdouble *value, GError **error)
 
 	/* coldplug source */
 	if (klass->get_ambient == NULL) {
+		ret = FALSE;
 		g_set_error_literal (error,
 				     GCM_SENSOR_ERROR,
 				     GCM_SENSOR_ERROR_INTERNAL,
@@ -402,6 +403,7 @@ gcm_sensor_sample (GcmSensor *sensor, GcmColorXYZ *value, GError **error)
 
 	/* coldplug source */
 	if (klass->sample == NULL) {
+		ret = FALSE;
 		g_set_error_literal (error,
 				     GCM_SENSOR_ERROR,
 				     GCM_SENSOR_ERROR_INTERNAL,