rem: xgethostname ()
add: xgethostname (void)
context: xgethostname (){  char *hostname;  size_t size;  size = INITIAL_HOSTNAME_LENGTH;  /* Use size + 1 here rather than size to work around the bug     in SunOS5.5's gethostname whereby it NUL-terminates HOSTNAME     even when the name is longer than the supplied buffer.  */  hostname = xmalloc (size + 1);  while (1)    {      int k = size - 1;      int err;      errno = 0;      hostname[k] = '\0';      err = gethostname (hostname, size);      if (err >= 0 && hostname[k] == '\0')	break;      else if (err < 0 && errno != ENAMETOOLONG && errno != 0)	error (EXIT_FAILURE, errno, "gethostname");      size *= 2;      hostname = xrealloc (hostname, size + 1);    }  return hostname;}