Ensure we clear the write fds set for consecutive socket sends().
Ensure we clear the write fds set for consecutive socket sends().

This fixes the issue where only the first socket added to the write
fds would appear as set. i.e., FD_SET(socket2..n, wfds).

Seravo/goaccess,Seravo/goaccess,Seravo/goaccess,Seravo/goaccess