mod_sasl2_fast: Fix malformed-request when using HT-*-NONE (thanks lnj!) This crept into the previous commit which tried to fail early when CB was requested but unavailable - that commit did not actually check that CB *was* requested.

---
labels:
- Stage-Alpha
rockspec:
  dependencies:
  - mod_sasl2
summary: "XEP-0386: Bind 2.0"
---

Experimental early implementation of [XEP-0386: Bind 2.0] for use with
[mod_sasl2].