A fix moved from sql_yacc.yy to sql_yacc_ora.yy.

mysql-test/main/set_statement.result

@@ -1225,3 +1225,10 @@ set @rnd=1;
 select @rnd;
 @rnd
 0
+create table t (a int);
+SET sql_mode=ORACLE;
+SET STATEMENT myisam_sort_buffer_size=800000 FOR OPTIMIZE TABLE t;
+Table	Op	Msg_type	Msg_text
+test.t	optimize	status	Table is already up to date
+SET sql_mode=default;
+drop table t;

mysql-test/main/set_statement.test

@@ -1130,3 +1130,10 @@ while ($1)
 --enable_query_log
 --echo # @rnd should be 0
 select @rnd;
+
+create table t (a int);
+SET sql_mode=ORACLE;
+SET STATEMENT myisam_sort_buffer_size=800000 FOR OPTIMIZE TABLE t;
+SET sql_mode=default;
+drop table t;
+

sql/sql_yacc_ora.yy

@@ -13176,10 +13176,11 @@ table_list:
 table_name:
           table_ident
           {
-            if (unlikely(!Select->add_table_to_list(thd, $1, NULL,
-                                                    TL_OPTION_UPDATING,
-                                                    YYPS->m_lock_type,
-                                                    YYPS->m_mdl_type)))
+            if (!thd->lex->current_select_or_default()->
+                                           add_table_to_list(thd, $1, NULL,
+                                           TL_OPTION_UPDATING,
+                                           YYPS->m_lock_type,
+                                           YYPS->m_mdl_type))
               MYSQL_YYABORT;
           }
         ;