[Bug-wget] HTTPS timeout fixed

[Gregg Weber]

I noticed that wget still hangs if the https server dies after the 
initial handshake completes.
I found out it is due to the second call to SSL_shutdown locking up.
Well, it seems dumb to politely send a "close notify" alert to a server 
that is dead, I think it makes more sense to just go away after the 
server has already timed out.
So, here is my solution:

In http.c, define a new macro SHUTDOWN_SSL2

#ifdef HAVE_SSL
# define SHUTDOWN_SSL(ssl) do {        \
 if (ssl)                \
   shutdown_ssl (ssl);            \
} while (0)
# define SHUTDOWN_SSL2(ssl) do {        \
 if (ssl)                \
   shutdown_ssl_when_connection_is_dead (ssl);            \
} while (0)
#else
# define SHUTDOWN_SSL(ssl)
# define SHUTDOWN_SSL2(ssl)
#endif

and change the CLOSE_INVALIDATE macro to call the new SHUTDOWN_SSL2

#define CLOSE_INVALIDATE(fd) do {        \
 SHUTDOWN_SSL2 (ssl);                \
 CLOSE (fd);                    \
 if (pc_active_p && (fd) == pc_last_fd)    \
   invalidate_persistent ();            \
} while (0)

And in gen_sslfunc.c define a new routine  
"shutdown_ssl_when_connection_is_dead"

void
shutdown_ssl_when_connection_is_dead (SSL* con)
{
 if (con == NULL)
   return;
 SSL_shutdown (con);
 SSL_free (con);
}

I tested the fix with this command:
wget --read-timeout=5 --tries=1 -O boz 
https://some_malfunctioning_server.com

It times out after 5 seconds, as it should.

What do you think?