From: Lars Magne Ingebrigtsen <larsi@gnus.org>
Date: Tue, 10 Apr 2012 17:03:34 +0000 (+0200)
Subject: Tiny url-util.el code clean-up.
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Tiny url-util.el code clean-up.
---

diff --git a/lisp/url/url-util.el b/lisp/url/url-util.el
index 848eb66e54b..d12bd5447fa 100644
--- a/lisp/url/url-util.el
+++ b/lisp/url/url-util.el
@@ -330,8 +330,7 @@ forbidden in URL encoding."
 		     " ")
 		    (t (byte-to-string code))))
 	      str (substring str (match-end 0)))))
-    (setq tmp (concat tmp str))
-    tmp))
+    (concat tmp str)))
 
 (defconst url-unreserved-chars
   '(