[gnome-color-manager] Ensure the sensor is unlocked after failing to get a sample in gcm-picker

[Richard Hughes <rhughes src gnome org>]

commit 09c5755ae05daf3e73290f2aaf29f7e718fd9885
Author: Richard Hughes <richard hughsie com>
Date:   Mon Jan 16 11:55:01 2012 +0000

    Ensure the sensor is unlocked after failing to get a sample in gcm-picker
    
    The failure may be transitory, and if the sensor is left locked then the user
    has to restart the gcm-picker tool.
    
    This is based on a patch from Klaus Kaempf, many thanks.
    
    Resolves: https://bugzilla.gnome.org/show_bug.cgi?id=667913

 src/gcm-picker.c |   13 ++++++-------
 1 files changed, 6 insertions(+), 7 deletions(-)
---
diff --git a/src/gcm-picker.c b/src/gcm-picker.c
index c97b665..1f5f453 100644
--- a/src/gcm-picker.c
+++ b/src/gcm-picker.c
@@ -277,8 +277,8 @@ gcm_picker_measure_cb (GtkWidget *widget, gpointer data)
 					 &error);
 	if (tmp == NULL) {
 		g_warning ("failed to get sample: %s", error->message);
-		g_error_free (error);
-		goto out;
+		g_clear_error (&error);
+		goto out_unlock;
 	}
 	cd_color_copy_xyz (tmp, &last_sample);
 #if 0
@@ -291,17 +291,17 @@ gcm_picker_measure_cb (GtkWidget *widget, gpointer data)
 					 &error);
 	if (!ret) {
 		g_warning ("failed to get ambient: %s", error->message);
-		g_error_free (error);
-		goto out;
+		g_clear_error (&error);
+		goto out_unlock;
 	}
 #endif
-
+out_unlock:
 	/* unlock */
 	ret = cd_sensor_unlock_sync (sensor,
 				     NULL,
 				     &error);
 	if (!ret) {
-		g_warning ("failed to lock: %s", error->message);
+		g_warning ("failed to unlock: %s", error->message);
 		g_error_free (error);
 		goto out;
 	}
@@ -311,7 +311,6 @@ gcm_picker_measure_cb (GtkWidget *widget, gpointer data)
 out:
 	if (tmp != NULL)
 		cd_color_xyz_free (tmp);
-	return;
 }
 
 /**