Bugfix: list index out of range when opening service discovery

Fixes #9301

gajim/disco.py

@@ -1569,6 +1569,9 @@ class ToplevelAgentBrowser(AgentBrowser):
 
     def _update_info(self, iter_, jid, node, identities, features, data):
         addr = get_agent_address(jid, node)
+        if not identities:
+            descr = "<b>%s</b>" % addr
+        else:
             name = identities[0].get('name', '')
             if name:
                 descr = "<b>%s</b>\n%s" % (name, addr)