memory (disco): fix incorrect use of await

libervia/backend/memory/disco.py

@@ -371,9 +371,9 @@ class Discovery:
         if jid_ == client.server_jid and not node:
             # we cache items only for our own server and if node is not set
             try:
-                items = await self.host.memory.entity_data_get(
-                    client, jid_, ["DISCO_ITEMS"]
-                )["DISCO_ITEMS"]
+                items = G.host.memory.entity_data_get(client, jid_, ["DISCO_ITEMS"])[
+                    "DISCO_ITEMS"
+                ]
                 log.debug("[%s] disco items are in cache" % jid_.full())
                 if not use_cache:
                     # we ignore cache, so we pretend we haven't found it