Global handle leak in Realm.create() fixed.

test/mjsunit/regress/regress-crbug-501808.js

Index: test/mjsunit/regress/regress-crbug-501808.js
diff --git a/test/message/formal-parameters-strict-body.js b/test/mjsunit/regress/regress-crbug-501808.js
similarity index 72%
copy from test/message/formal-parameters-strict-body.js
copy to test/mjsunit/regress/regress-crbug-501808.js
index c5af7405f7ca114226432b52043e9a0b90bd7208..f9b97841c499cec0d209753dcddf9cfe0c17b520 100644
--- a/test/message/formal-parameters-strict-body.js
+++ b/test/mjsunit/regress/regress-crbug-501808.js
@@ -2,4 +2,5 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-function foo(b, eval) { "use strict"; return b }
+var r = Realm.create();
+assertEquals(0, "a".localeCompare("a"));