Preserve exception message in iterator finalization.

test/message/for-of-throw-in-body.out

Index: test/message/for-of-throw-in-body.out
diff --git a/test/fuzzer/fuzzer.status b/test/message/for-of-throw-in-body.out
similarity index 65%
copy from test/fuzzer/fuzzer.status
copy to test/message/for-of-throw-in-body.out
index df922bbf4e6d398165322c804085e757128071c9..4bc48ebdade048ecfd8a90cce73a6aeb69b13247 100644
--- a/test/fuzzer/fuzzer.status
+++ b/test/message/for-of-throw-in-body.out
@@ -1,7 +1,6 @@
 # Copyright 2016 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.
-
-[
-
-]
+*%(basename)s:5: 42
+for (var x of [1, 2, 3]) { throw 42 }
+                           ^