simplify

void WriteRestart::magic_string()

{

  int n = strlen(MAGIC_STRING) + 1;

  char *str = new char[n];

  strcpy(str,MAGIC_STRING);

  fwrite(str,sizeof(char),n,fp);

  delete [] str;

  std::string magic = MAGIC_STRING;

  fwrite(magic.c_str(),sizeof(char),magic.size()+1,fp);

}

/* ---------------------------------------------------------------------- */