Index: gdm-2.28.0/daemon/gdm-slave.c
===================================================================
--- gdm-2.28.0.orig/daemon/gdm-slave.c
+++ gdm-2.28.0/daemon/gdm-slave.c
@@ -836,6 +836,8 @@ gdm_slave_parse_enriched_login (GdmSlave
         } else {
                 return (g_strdup (username));
         }
+
+	return NULL;
 }
 
 gboolean