Add missing semicolon. Recent versions of bison seem to choke on this,

per buildfarm report from platypus, even though older versions let it pass.

src/interfaces/ecpg/preproc/preproc.y

-/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.311 2005/10/04 13:28:21 meskes Exp $ */
+/* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/preproc.y,v 1.312 2005/11/27 01:22:23 tgl Exp $ */
 
 /* Copyright comment */
 %{
@@ -3036,6 +3036,7 @@ DeleteStmt:  DELETE_P FROM relation_expr using_clause where_clause
 
 using_clause: USING from_list	{ cat2_str(make_str("using"), $2); }
 			| /* EMPTY */		{ $$ = EMPTY; }
+		;
 
 LockStmt:  LOCK_P opt_table qualified_name_list opt_lock opt_nowait
 			{ $$ = cat_str(5, make_str("lock"), $2, $3, $4, $5); }