Fix issue 5517 by setting the successors the right way in a try/catch.

tests/language/finally_test.dart

+// 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.
+
+// Test for a bug in dart2js where the update of a field in a try
+// block would not be seen by the finally block. See dartbug.com/5517.
+
+class A {
+  int i;
+  A() : i = 42;
+
+  foo() {
+    bool executedFinally = false;
+    if (i === 42) {
+      try {
+        i = 12;
+      } finally {
+        Expect.equals(12, i);
+        executedFinally = true;
+      }
+    }
+    Expect.isTrue(executedFinally);
+  }
+}
+
+main() {
+  new A().foo();
+}