Revert "Remove unnecessary check in RegExpExecStub."

test/mjsunit/regexp-stack-overflow.js

Index: test/mjsunit/regexp-stack-overflow.js
diff --git a/test/mjsunit/regexp-stack-overflow.js b/test/mjsunit/regexp-stack-overflow.js
deleted file mode 100644
index 637d205642d2032c9415f06e839d0788973a1ab3..0000000000000000000000000000000000000000
--- a/test/mjsunit/regexp-stack-overflow.js
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2014 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=100
-
-var result = null;
-var re = /\w/;
-re.test("a");  // Trigger regexp compile.
-
-function rec() {
-  try {
-    return rec();
-  } catch (e) {
-    return re.test("b");
-  }
-}
-
-assertTrue(rec());