Fix fontification of radio links

* lisp/org.el (org-set-font-lock-defaults): Fix fontification of radio
  links.

Thanks to Daniel Clemente for reporting it.
http://permalink.gmane.org/gmane.emacs.orgmode/84927

lisp/org.el

@@ -6288,7 +6288,7 @@ needs to be inserted at a specific position in the font-lock sequence.")
 	   (if (memq 'angle lk) '(org-activate-angle-links (0 'org-link t)))
 	   (if (memq 'plain lk) '(org-activate-plain-links (0 'org-link t)))
 	   (if (memq 'bracket lk) '(org-activate-bracket-links (0 'org-link t)))
-	   (if (memq 'radio lk) '(org-activate-target-links (0 'org-link t)))
+	   (if (memq 'radio lk) '(org-activate-target-links (1 'org-link t)))
 	   (if (memq 'date lk) '(org-activate-dates (0 'org-date t)))
 	   (if (memq 'footnote lk) '(org-activate-footnote-links))
            ;; Targets.