[interpreter] Clear pending message object on handler entry.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 495 matching lines @@
 }],  # 'arch == ppc64 and simulator_run == True'
 
 ['ignition == True', {
   # TODO(yangguo,4690): Enable debugger support for Ignition.
   'test-debug/*' : [SKIP],
 
   # TODO(yangguo,4690): Required DebuggerStatement support.
   'test-profile-generator/BailoutReason': [FAIL],
   'test-api/Regress385349': [FAIL],
 
-  # TODO(mstarzinger,4674): Message object is not properly cleared.
-  'test-heap/MessageObjectLeak': [FAIL],
-
   # TODO(mstarzinger,4674): Support exception handlers in BytecodeGraphBuilder.
-  'test-run-deopt/DeoptExceptionHandlerCatch': [FAIL],
+  'test-run-deopt/DeoptExceptionHandlerCatch': [PASS, FAIL],
 
   # TODO(rmcilroy,4680): Check failed: toplevel_test_code_event_found.
   'test-serialize/SerializeToplevelIsolates': [FAIL],
 
   # TODO(rmcilroy,4680): Exception message doesn't match in release mode.
   'test-run-jsexceptions/ThrowMessageIndirectly': [FAIL, PASS],
 
   # TODO(rmcilroy,4682): Requires support for classes.
   'test-inobject-slack-tracking/SubclassBasicNoBaseClassInstancesNoInlineNew': [FAIL],
   'test-inobject-slack-tracking/SubclassBasicNoBaseClassInstances': [FAIL],
@@ skipping 228 matching lines @@
   'test-serialize/SerializeInternalReference': [PASS, FAIL],
   'test-spaces/SizeOfFirstPageIsLargeEnough': [PASS, FAIL],
   'test-api/InitializeDefaultIsolateOnSecondaryThread1': [PASS, FAIL],
   'test-heap/Regress538257': [PASS, FAIL],
   'test-heap/AddInstructionChangesNewSpacePromotion': [PASS, FAIL],
   'test-api/ExternalWrap': [PASS, FAIL],
   'test-decls/CrossScriptReferencesHarmony': [PASS, FAIL],
 }],  # ignition == True and arch == arm64
 
 ]