Fixed exception handling in Realm.create().

test/mjsunit/regress/regress-crbug-501711.js

Index: test/mjsunit/regress/regress-crbug-501711.js
diff --git a/test/mjsunit/compiler/regress-451012.js b/test/mjsunit/regress/regress-crbug-501711.js
similarity index 71%
copy from test/mjsunit/compiler/regress-451012.js
copy to test/mjsunit/regress/regress-crbug-501711.js
index bffc8bc5bdfac32bb561a24153d00157b26ac3a5..f8eda6e8d8e26f41b79e05af891b0f5446b5cd37 100644
--- a/test/mjsunit/compiler/regress-451012.js
+++ b/test/mjsunit/regress/regress-crbug-501711.js
@@ -2,11 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-"use strict";
+// Flags: --stack-size=100
+
 function f() {
-  for (let v; v; ) {
-    let x;
+  try {
+    f();
+  } catch(e) {
+    Realm.create();
   }
 }
-
 f();