Use updated local declaration syntax.

Author: danluu

src/test/run-pass/deriving-self-lifetime-totalord-totaleq.rs

@@ -1,5 +1,3 @@
-// xfail-test FIXME #6257
-
 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
@@ -16,9 +14,8 @@ use std::cmp::{Less,Equal,Greater};
 struct A<'self> {
     x: &'self int
 }
-
 fn main() {
-    let a = A { x: &1 }, b = A { x: &2 };
+    let (a, b) = (A { x: &1 }, A { x: &2 });
 
     assert!(a.equals(&a));
     assert!(b.equals(&b));