PR_ASSERT(!enc->part_buffer);
MimeEncrypted_close_headers (MimeObject *obj){  MimeEncrypted *enc = (MimeEncrypted *) obj;  PR_ASSERT(!enc->part_buffer);  if (enc->part_buffer) return -1;  enc->part_buffer = MimePartBufferCreate();  if (!enc->part_buffer)	return MIME_OUT_OF_MEMORY;  return 0;}