Clear pending exception on stack overflow in the parser

test/mjsunit/regress/regress-crbug-450960.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Flags: --stack-size=70
+
+"a".replace(/a/g, "");
+
+function test() {
+   try {
+     test();
+   } catch(e) {
+     "b".replace(/(b)/g, new []);
+   }
+}
+
 try {
-  load("test/mjsunit/regress/regress-444805.js-script");
+  test();
 } catch (e) {
 }