[strong] fix strong object exception messages

test/message/strong-object-set-proto.js

Index: test/message/strong-object-set-proto.js
diff --git a/test/mjsunit/compiler/regress-463056.js b/test/message/strong-object-set-proto.js
similarity index 73%
copy from test/mjsunit/compiler/regress-463056.js
copy to test/message/strong-object-set-proto.js
index fb871618e42c9387d38a445522bfd01cfbbe9bfa..890dd84d7292372c75cb9180ce67c3accadd0b81 100644
--- a/test/mjsunit/compiler/regress-463056.js
+++ b/test/message/strong-object-set-proto.js
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-function f() {
- return ((0%0)&1) + (1>>>(0%0));
-}
+// Flags: --strong-mode
 
-f();
+"use strong";
+
+({}).__proto__ = {};