Use bot.Nick and bot.Realname when doing SASL authenticate

[DBX12]

hellabot is setting the wrong realname when performing SASL auth in SASLAuthentictae()

hellabot/sasl.go

Lines 62 to 69 in 98cbebb

	func (bot *Bot) SASLAuthenticate(user, pass string) {
	bot.sasl.SetAuth(user, pass)
	bot.addSASL.Do(func() { bot.AddTrigger(bot.sasl) })
	bot.Debug("Beginning SASL Authentication")
	bot.Send("CAP REQ :sasl")
	bot.SetNick(bot.Nick)
	bot.sendUserCommand(bot.Nick, bot.Nick)
	}

Seems like a mistake and bot.sendUserCommand(bot.Nick, bot.Realname) was intended.