Merge mysql.com:/opt/local/work/mysql-5.0-8568

into  mysql.com:/opt/local/work/mysql-5.1-new

sql/sql_cursor.cc

@@ -661,11 +661,10 @@ Materialized_cursor::~Materialized_cursor()
 
 bool Select_materialize::send_fields(List<Item> &list, uint flags)
 {
-  bool rc;
   DBUG_ASSERT(table == 0);
   if (create_result_table(unit->thd, unit->get_unit_column_types(),
                           FALSE, thd->options | TMP_TABLE_ALL_COLUMNS, ""))
     return TRUE;
-  return rc;
+  return FALSE;
 }