fix(): Fix nil pointer panic in verification example

[obalunenko]

After completing challenge Account at root structure stayed to be nil. That cases panic.
Assign Account from Challenge to root Account

[obalunenko]

Could you please review @ahmdrz ?

[obalunenko]

@ahmdrz
Or maybe it will be better to refactor login with verification challenge case logic?
Nevertheless, now it works without panic.

[felipeinf]

@ahmdrz
Or maybe it will be better to refactor login with verification challenge case logic?
Nevertheless, now it works without panic.

I tried it but didn't work