Ignore sts tokens on plain-text connections if no port key is provided

modules/ircv3_sts.py

@@ -35,6 +35,7 @@ class Module(ModuleManager.BaseModule):
             info = utils.parse.keyvalue(event["capabilities"][sts],
                 delimiter=",")
             if not event["server"].connection_params.tls:
+                if "port" in info:
                     self.set_policy(event["server"], int(info["port"]), None)
                     event["server"].disconnect()
                     self.bot.reconnect(event["server"].id,