[gdm] daemon: one more NULL initialization fix in CK code

[Ray Strode <halfline src gnome org>]

commit 3397eb654515a2e6a636d20a316fff6b1334bf4f
Author: Ray Strode <rstrode redhat com>
Date:   Wed Aug 1 17:40:31 2012 -0400

    daemon: one more NULL initialization fix in CK code
    
    gdm_slave_get_primary_session_id_for_user_from_ck uses a GError
    unintialized.
    
    This commit fixes that.

 daemon/gdm-slave.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-slave.c b/daemon/gdm-slave.c
index 0869097..94c369c 100644
--- a/daemon/gdm-slave.c
+++ b/daemon/gdm-slave.c
@@ -1416,6 +1416,7 @@ gdm_slave_get_primary_session_id_for_user_from_ck (GdmSlave   *slave,
         GVariantIter  iter;
         char         *ssid;
 
+        error = NULL;
         primary_ssid = NULL;
 
         g_debug ("GdmSlave: getting proxy for seat: %s", slave->priv->display_seat_id);