Confererence NONAME user

[panpansh]

When I create a conference, I can see a user without name and because, I click on it and BAM.

D/AndroidRuntime: Shutting down VM E/AndroidRuntime: FATAL EXCEPTION: main Process: com.xabber.androiddev, PID: 11146 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.jxmpp.jid.parts.Resourcepart.toString()' on a null object reference

[panpansh]

This visitor is only visible by xabber

[ge0rg]

I've encountered null named participants in MUCs that have a MUC avatar and send it as a presence from the bare JID. It shouldn't have the participant status code, but might be interpreted as a participant by less sophisticated implementations: https://mail.jabber.org/pipermail/standards/2018-May/034949.html

[andrewnenakhov]

thing is, we see little value in fixing obvious bugs that are related to functionality that is soon to be made obsolete.

[Str4tocaster]

@panpansh I have no idea why your conference have empty occupants. But i fixed NPE. 67af00b

[panpansh]

Fix work, I see the NONAME visitor but the app don't crash thanks

[panpansh]

fixed here : #860