ares_socket: set IP_BIND_ADDRESS_NO_PORT on ares_set_local_ip* tcp sockets

[crrodriguez]

If you bind to a local address, you now only have approx 32k possible source ports to initiate connections.
In modern days that can quickly run out.
setting IP_BIND_ADDRESS_NO_PORT let's the kernel choose a port at connect time, increasing the limit of combinations to around a million.

[bradh352]

Can you use the same pattern as SO_NOSIGPIPE? int opt = 1; and pass that in instead of the form you're using?

[crrodriguez]

ook. compound literals are valid c99 thou..

[bradh352]

ook. compound literals are valid c99 thou..

we use ANSI C89 / ISO C90 still which is why compilation generates these warnings:

/home/runner/work/c-ares/c-ares/src/lib/ares_socket.c: In function ‘ares_socket_configure’:
/home/runner/work/c-ares/c-ares/src/lib/ares_socket.c:579:67: warning: ISO C90 forbids compound literals [-Wpedantic]
  579 |     (void) setsockopt(fd, SOL_IP, IP_BIND_ADDRESS_NO_PORT, &(int) {1}, sizeof(int));
      |                                                                   ^

[crrodriguez]

ok fixed now.