Method close

libhsclient/auto_file.hpp:27–34

  }
  int get() const { return fd; }
  int close() {
    if (fd < 0) {
      return 0;
    }
    const int r = ::close(fd);
    fd = -1;
    return r;
  }
  void reset(int x = -1) {
    if (fd >= 0) {
      this->close();