Don't trip over referral entries.  RT#6915

Index: krb5-1.9.1/src/clients/klist/klist.c
===================================================================
--- krb5-1.9.1.orig/src/clients/klist/klist.c
+++ krb5-1.9.1/src/clients/klist/klist.c
@@ -28,7 +28,7 @@
  * List out the contents of your credential cache or keytab.
  */
 
-#include "autoconf.h"
+#include "k5-int.h"
 #include <krb5.h>
 #include <com_err.h>
 #include <stdlib.h>
@@ -390,10 +390,9 @@ void do_ccache(name)
             continue;
         if (status_only) {
             if (exit_status && creds.server->length == 2 &&
-                strcmp(creds.server->realm.data, princ->realm.data) == 0 &&
-                strcmp((char *)creds.server->data[0].data, "krbtgt") == 0 &&
-                strcmp((char *)creds.server->data[1].data,
-                       princ->realm.data) == 0 &&
+                data_eq(creds.server->realm, princ->realm) &&
+                data_eq_string(creds.server->data[0], "krbtgt") &&
+                data_eq(creds.server->data[1], princ->realm) &&
                 creds.times.endtime > now)
                 exit_status = 0;
         } else {