mod_pubsub_serverinfo: Fix check for local domain The module was checking whether a host exists, but this may be misleading if our host is loaded before the host that is being checked. This change makes it check the config. This will provide a false positive in the rare case that the host is defined but not activated/enabled. But we don't have an API currently for "is this host configured and enabled?"

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summary: 'XEP-0198: Reliability and fast reconnects for XMPP'
superseded_by: mod_smacks
labels:
- 'Stage-Obsolete'
...

Since Prosody 0.12, this module is [included in Prosody](https://prosody.im/doc/modules/mod_smacks).