use _hdb_fetch_kvno

lib/hdb/db3.c

@@ -349,6 +349,7 @@ hdb_db_create(krb5_context context, HDB **db,
     (*db)->hdb_open  = DB_open;
     (*db)->hdb_close = DB_close;
     (*db)->hdb_fetch = _hdb_fetch;
+    (*db)->hdb_fetch_kvno = _hdb_fetch_kvno;
     (*db)->hdb_store = _hdb_store;
     (*db)->hdb_remove = _hdb_remove;
     (*db)->hdb_firstkey = DB_firstkey;