message: Fix copied buffer
diff: @@ -99,7 +99,7 @@ FileCopyAllocation::FileCopyAllocation(const char* filename,
  filename);
  return;
  }
  - copied_buffer_ = std::move(buffer);
  + copied_buffer_.reset(const_cast<char const *>(buffer.release()));
  }
  FileCopyAllocation::~FileCopyAllocation() {}
  