test: fix compile-fail tests somehow missed from local 'make check', r=burningtree.

src/test/compile-fail/auto-ref-slice-plus-ref.rs

@@ -16,7 +16,7 @@ fn main() {
     // temporary, which would be a source of confusion
 
     let mut a = @[0];
-    a.test_mut(); //~ ERROR type `@[int]` does not implement any method in scope named `test_mut`
+    a.test_mut(); //~ ERROR does not implement any method in scope named `test_mut`
 }
 
 trait MyIter {

src/test/compile-fail/trait-test-2.rs

@@ -13,7 +13,7 @@ impl int: bar { fn dup() -> int { self } fn blah<X>() {} }
 impl uint: bar { fn dup() -> uint { self } fn blah<X>() {} }
 
 fn main() {
-    10.dup::<int>(); //~ ERROR does not take type parameters
-    10.blah::<int, int>(); //~ ERROR incorrect number of type parameters
+    10i.dup::<int>(); //~ ERROR does not take type parameters
+    10i.blah::<int, int>(); //~ ERROR incorrect number of type parameters
     (10 as bar).dup(); //~ ERROR contains a self-type
 }