[turbofan] Fix frame state for class literal definition.

test/mjsunit/regress/regress-crbug-480819.js

Index: test/mjsunit/regress/regress-crbug-480819.js
diff --git a/test/message/regress/regress-3995.js b/test/mjsunit/regress/regress-crbug-480819.js
similarity index 59%
copy from test/message/regress/regress-3995.js
copy to test/mjsunit/regress/regress-crbug-480819.js
index ba84bc096527cc242b9ad43983b42eec0462c43c..8d3b7eed60ea20d880cf68def679cd859263ea99 100644
--- a/test/message/regress/regress-3995.js
+++ b/test/mjsunit/regress/regress-crbug-480819.js
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Flags: --turbo-filter=* --always-opt --turbo-deoptimization --noanalyze-environment-liveness
+
 (function() {
-  throw new Error("boom");
+  "use strict";
+  class C1 {}
 })();