Fix test

(cherry picked from commit 4a25a49edf)

src/test/run-pass-valgrind/cast-enum-with-dtor.rs

@@ -28,7 +28,7 @@ fn main() {
     {
         let e = E::C;
         assert_eq!(e as u32, 2);
-        assert_eq!(FLAG.load(Ordering::SeqCst), 0);
+        assert_eq!(FLAG.load(Ordering::SeqCst), 1);
     }
     assert_eq!(FLAG.load(Ordering::SeqCst), 1);
 }