Typo in Developers' Handbook 7.6.1

[G. Adam Stanislav]

I have just noticed a typo in something I wrote for the Developers' 
Handbook several years ago. :blush:

In 7.6.1 gethostbyname, there is some sample code and it contains 
a line that says:

  herror(host);

That's what happens when you think faster than you type. It should 
be:

  perror(host);

I am currently not equipped to submit a formal request to have it 
fixed, so I am hoping that posting it here is enough.

Thank you,
Adam