org.el (org-deadline-close): Use `org-time-stamp-to-now'

* org.el (org-deadline-close): Use `org-time-stamp-to-now'.

lisp/org.el

@@ -15921,7 +15921,7 @@ If SECONDS is non-nil, return the difference in seconds."
 (defun org-deadline-close (timestamp-string &optional ndays)
   "Is the time in TIMESTAMP-STRING close to the current date?"
   (setq ndays (or ndays (org-get-wdays timestamp-string)))
-  (and (< (org-days-to-time timestamp-string) ndays)
+  (and (< (org-time-stamp-to-now timestamp-string) ndays)
        (not (org-entry-is-done-p))))
 
 (defun org-get-wdays (ts)