Fix compile problem - line missing.

sql/sql_parse.cc

@@ -147,6 +147,7 @@ static bool begin_trans(THD *thd)
     error= -1;
   else
   {
+    LEX *lex= thd->lex;
     thd->options= ((thd->options & (ulong) ~(OPTION_STATUS_NO_TRANS_UPDATE)) |
 		   OPTION_BEGIN);
     thd->server_status|= SERVER_STATUS_IN_TRANS;