[gnome-settings-daemon] power: One more error path tweak

[Bastien Nocera <hadess src gnome org>]

commit d5bc2f09ac8ee81a2e6266ff6f81b55411441783
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Sep 8 10:52:20 2011 +0100

    power: One more error path tweak

 plugins/power/gsd-power-manager.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/power/gsd-power-manager.c b/plugins/power/gsd-power-manager.c
index 72eae6b..34ac6fb 100644
--- a/plugins/power/gsd-power-manager.c
+++ b/plugins/power/gsd-power-manager.c
@@ -2264,7 +2264,7 @@ backlight_helper_get_value (const gchar *argument, GError **error)
                              GSD_POWER_MANAGER_ERROR,
                              GSD_POWER_MANAGER_ERROR_FAILED,
                              "gsd-backlight-helper failed: %s",
-                             stdout_data);
+                             stdout_data ? stdout_data : "No reason");
                 goto out;
         }