test: Fix borrowck-preserve-box-in-pat. rs=bustage

Author: pcwalton

src/test/run-pass/borrowck-preserve-box-in-pat.rs

@@ -3,15 +3,15 @@
 fn main() {
     let mut x = @mut @{f: ~3};
     match x {
-      @@{f: b_x} => {
-        assert *b_x == 3;
-        assert ptr::addr_of(&(x.f)) == ptr::addr_of(&(b_x));
+      @@{f: ref b_x} => {
+        assert **b_x == 3;
+        assert ptr::addr_of(&(x.f)) == ptr::addr_of(b_x);
 
         *x = @{f: ~4};
 
-        debug!("ptr::addr_of(*b_x) = %x", ptr::addr_of(&(*b_x)) as uint);
-        assert *b_x == 3;
-        assert ptr::addr_of(&(*x.f)) != ptr::addr_of(&(*b_x));
+        debug!("ptr::addr_of(*b_x) = %x", ptr::addr_of(&(**b_x)) as uint);
+        assert **b_x == 3;
+        assert ptr::addr_of(&(*x.f)) != ptr::addr_of(&(**b_x));
       }
     }
 }