Using new error code HA_ERR_TABLE_DEF_CHANGED to signal wrong schema version of table

mysql-test/t/ndb_alter_table.test

@@ -152,7 +152,7 @@ connection server1;
 alter table t1 drop index c;
 connection server2;
 # This should fail since index information is not automatically refreshed
---error 1105
+--error 1412
 select * from t1 where b = 'two';
 select * from t1 where b = 'two';
 connection server1;

sql/ha_ndbcluster.cc

@@ -3342,8 +3342,7 @@ int ha_ndbcluster::external_lock(THD *thd, int lock_type)
         /*
           The table has been altered, caller has to retry
         */
-        NdbError err= ndb->getNdbError(NDB_INVALID_SCHEMA_OBJECT);
-        DBUG_RETURN(ndb_to_mysql_error(&err));
+        DBUG_RETURN(my_errno= HA_ERR_TABLE_DEF_CHANGED);
       }
       m_table_info= tab_info;
     }