This is happened when doing wispr against a HTTPS URL
rather than the default one, i.e.
http://ipv4.connman.net/online/status.html
When gnutls_channel is instantiated, the gnutls_channel->established
has to be initiated as FALSE. Otherwise, check_handshake function
won't work. A random initial value 1 of gnutls_channel->established
will make check_handshake return G_IO_STATUS_NORMAL, when the channel
is actually not ready to be used. The observed behaviours are,
- wispr is getting random errors in wispr_portal_web_result
- ConnMan crashes on exit after those random errors
- when wispr is luckly working, ConnMan doesn't crash on exit
