MorePrivacy: Don't register WHOWAS information

Citing an email from Florian to the ngIRCd mailing list:

"I wonder what the expected behaviour is when Conf_MorePrivacy is changed
 from 'yes' to 'no' and the config is reloaded.

 At the moment, WHOWAS will start giving out information on Users that
 were connected during Conf_MorePrivacy=yes period.  If this is not
 wanted, Client_RegisterWhowas() should be changed to not store a record
 when Conf_MorePrivacy is enabled."

And I think it is "not wanted" :-)

src/ngircd/client.c

@@ -1192,6 +1192,10 @@ Client_RegisterWhowas( CLIENT *Client )
 
 	assert( Client != NULL );
 
+	/* Don't register WHOWAS information when "MorePrivacy" is enabled. */
+	if (Conf_MorePrivacy)
+		return;
+
 	now = time(NULL);
 	/* Don't register clients that were connected less than 30 seconds. */
 	if( now - Client->starttime < 30 )