Fix a defect in the query-flattener optimization identified by

ticket [8f157e8010b22af0].

FossilOrigin-Name: 10fa79d00f8091e5748c245f4cae5b5f499a5f8db20da741c130e05a21ede443

src/sqliteInt.h

@@ -3122,6 +3122,7 @@ struct Select {
 #define SF_WhereBegin    0x0080000 /* Really a WhereBegin() call.  Debug Only */
 #define SF_WinRewrite    0x0100000 /* Window function rewrite accomplished */
 #define SF_View          0x0200000 /* SELECT statement is a view */
+#define SF_NoopOrderBy   0x0400000 /* ORDER BY is ignored for this query */
 
 /*
 ** The results of a SELECT can be distributed in several ways, as defined