bug#47431: Process Whois connection broken by remote peer.

[Hongyi Zhao]

Hi,

On Ubuntu 20.04, I'm using the self compiled git master version of Emacs.
It seems that the whois client in Emacs only works for some specific domain
 names, for example gnu.org and emacs.org, but for others like
facebook.com it just hangs and returns nothing. The following command
will trigger the error:

"M-x RET whois RET facebook.com"

Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Polytechnic University of Science and Technology engineering
NO. 552 North Gangtie Road, Xingtai, China