iq roster result from server is not captured by debugStanza flag

[lovetox]

debug code is missing in XmppCore.HandleIqResponse()

i fixed it with putting

if (debugStanzas) System.Diagnostics.Debug.WriteLine(iq.ToString());

at the end.

[pgstath]

Thanks for this. Please open a pull request against the main branch. This way your contribution will be logged in git.