org-agenda.el (org-agenda-finalize): Filter by top headline

* org-agenda.el (org-agenda-finalize): Filter by top headline
if `org-agenda-top-headline-filter' is set.

Thanks to Brady Trainor for reporting this.

lisp/org-agenda.el

@@ -3746,6 +3746,9 @@ generating a new one."
 					     (delete-dups
 					      (mapcar 'downcase (org-get-tags-at))))))))))
 	(run-hooks 'org-agenda-finalize-hook)
+	(when org-agenda-top-headline-filter
+	  (org-agenda-filter-top-headline-apply
+	   org-agenda-top-headline-filter))
 	(when org-agenda-tag-filter
 	  (org-agenda-filter-apply org-agenda-tag-filter 'tag))
 	(when (get 'org-agenda-tag-filter :preset-filter)