Make sure the merge block after a try/catch has its dominator the block that contains HTry. This wa…

tests/language/src/CodeAfterTryIsExecutedNegativeTest.dart

Index: tests/language/src/CodeAfterTryIsExecutedNegativeTest.dart
===================================================================
--- tests/language/src/CodeAfterTryIsExecutedNegativeTest.dart	(revision 0)
+++ tests/language/src/CodeAfterTryIsExecutedNegativeTest.dart	(revision 0)
@@ -0,0 +1,14 @@
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+main() {
+  var exception;
+  try {
+    throw 'foo';
+  } catch (String ex) {
+    exception = ex;
+  }
+  Expect.isTrue(exception is String);
+  throw 'foo';
+}