Revert "org.el (org-store-link): When a link has been stored, always returns it"

This reverts commit 035087777d0b4d91373466ed1a56f357c63f5465.

lisp/org.el

@@ -9608,8 +9608,8 @@ active region."
 	 (message "Stored: %s" (or desc link))
 	 (when custom-id
 	   (setq link (concat "file:" (abbreviate-file-name
-				       (buffer-file-name)) "::#" custom-id)))
-	 (push (list link desc) org-stored-links))))))
+				       (buffer-file-name)) "::#" custom-id))
+	   (push (list link desc) org-stored-links)))))))
 
 (defun org-store-link-props (&rest plist)
   "Store link properties, extract names and addresses."