(kauth): Use `DEFAULT_TKT_LIFE'

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1675 ec53bebd-3082-4978-b11e-865c3cabbd6b

appl/ftp/ftpd/kauth.c

@@ -219,7 +219,8 @@ void kauth(char *principal, char *ticket)
 			  pr.instance,
 			  pr.realm,
 			  KRB_TICKET_GRANTING_TICKET,
-			  pr.realm, 12,
+			  pr.realm,
+			  DEFAULT_TKT_LIFE,
 			  NULL, save_tkt, NULL);
     if(ret != INTK_BADPW){
 	reply(500, "Kerberos error: %s.", krb_get_err_text(ret));