[gnome-settings-daemon] power: Add missing variable

[Colin Walters <walters src gnome org>]

commit 8465ac7a2478c04edf6853648204f3477953869b
Author: Colin Walters <walters verbum org>
Date:   Wed Feb 13 11:36:06 2013 -0500

    power: Add missing variable
    
    Previous commit doesn't compile without this.

 plugins/power/gsd-power-manager.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/power/gsd-power-manager.c b/plugins/power/gsd-power-manager.c
index 6c15563..b5c1b64 100644
--- a/plugins/power/gsd-power-manager.c
+++ b/plugins/power/gsd-power-manager.c
@@ -184,6 +184,7 @@ struct GsdPowerManagerPrivate
         NotifyNotification      *notification_ups_discharging;
         NotifyNotification      *notification_low;
         NotifyNotification      *notification_sleep_warning;
+        NotifyNotification      *notification_logout_warning;
         GsdPowerActionType       sleep_action_type;
         gboolean                 battery_is_low; /* laptop battery low, or UPS discharging */