Fix bug introduced when extracting utils.

src/v8utils.h

 // Copyright 2010 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 166 matching lines @@
 class StringBuilder {
  public:
   // Create a string builder with a buffer of the given size. The
   // buffer is allocated through NewArray<char> and must be
   // deallocated by the caller of Finalize().
   explicit StringBuilder(int size);
 
   StringBuilder(char* buffer, int size)
       : buffer_(buffer, size), position_(0) { }
 
-  ~StringBuilder() { if (!is_finalized()) buffer_.Dispose(); }
+  ~StringBuilder() { if (!is_finalized()) Finalize(); }
 
   int size() const { return buffer_.length(); }
 
   // Get the current position in the builder.
   int position() const {
     ASSERT(!is_finalized());
     return position_;
   }
 
   // Reset the position.
@@ skipping 94 matching lines @@
   }
 #endif
   while (dest < limit) {
     *dest++ = static_cast<sinkchar>(*src++);
   }
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_V8UTILS_H_