org-protocol.el: Fix spelling mistake.

* org-protocol.el (org-protocol-check-filename-for-protocol):
Fix spelling mistake.

Thanks to Paul Eggert for fixing this in Emacs first.

lisp/org-protocol.el

@@ -546,8 +546,8 @@ as filename."
               (when (string-match proto fname)
                 (let* ((func (plist-get (cdr prolist) :function))
                        (greedy (plist-get (cdr prolist) :greedy))
-                       (splitted (split-string fname proto))
-                       (result (if greedy restoffiles (cadr splitted))))
+                       (split (split-string fname proto))
+                       (result (if greedy restoffiles (cadr split))))
                   (when (plist-get (cdr prolist) :kill-client)
 		    (message "Greedy org-protocol handler. Killing client.")
 		    (server-edit))