Simplify pending message object handling.

src/full-codegen.h

 // Copyright 2012 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.
 
 #ifndef V8_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 231 matching lines @@
 
     virtual NestedStatement* Exit(int* stack_depth, int* context_length);
 
    private:
     Label* finally_entry_;
   };
 
   // The finally block of a try/finally statement.
   class Finally : public NestedStatement {
    public:
-    static const int kElementCount = 4;
+    static const int kElementCount = 3;
 
     explicit Finally(FullCodeGenerator* codegen) : NestedStatement(codegen) { }
     virtual ~Finally() {}
 
     virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
       *stack_depth += kElementCount;
       return previous_;
     }
   };
 
@@ skipping 797 matching lines @@
 
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_