typedef struct WindowClause misleading comments

Hi.

Query jumbling considers the ORDER BY clause; therefore, the comment
below is inaccurate.

/
* The information relevant for the query jumbling is the partition clause
* type and its bounds.
*/
typedef struct WindowClause
{
NodeTag type;
/* window name (NULL in an OVER clause) */
char *name pg_node_attr(query_jumble_ignore);
/* referenced window name, if any */
char *refname pg_node_attr(query_jumble_ignore);
List *partitionClause; /* PARTITION BY list */
/* ORDER BY list */
List *orderClause;
int frameOptions; /* frame_clause options, see WindowDef */
Node *startOffset; /* expression for starting bound, if any */
Node *endOffset; /* expression for ending bound, if any */
.....
}