std: Fix net_url test that was commented out

Author: catamorphism

src/libstd/net_url.rs

@@ -1077,13 +1077,12 @@ mod tests {
 
     #[test]
     fn test_decode_form_urlencoded() {
-        // XXX: Broken.
-        /*assert decode_form_urlencoded(~[]).len() == 0;
+        assert decode_form_urlencoded(~[]).len() == 0;
 
         let s = str::to_bytes("a=1&foo+bar=abc&foo+bar=12+%3D+34");
         let form = decode_form_urlencoded(s);
         assert form.len() == 2;
         assert form.get_ref(&~"a") == &~[~"1"];
-        assert form.get_ref(&~"foo bar") == &~[~"abc", ~"12 = 34"];*/
+        assert form.get_ref(&~"foo bar") == &~[~"abc", ~"12 = 34"];
     }
 }