Fixup

synapse/handlers/message.py

@@ -1565,7 +1565,7 @@ class EventCreationHandler:
                 if state_entry.state_group in self._external_cache_joined_hosts_updates:
                     return
 
-                state = await state_entry.get_state(
+                await state_entry.get_state(
                     self._storage_controllers.state, StateFilter.all()
                 )
                 with opentracing.start_active_span("get_joined_hosts"):

synapse/storage/controllers/state.py

@@ -19,7 +19,6 @@ from typing import (
     Callable,
     Collection,
     Dict,
-    FrozenSet,
     Iterable,
     List,
     Mapping,
@@ -654,7 +653,7 @@ class StateStorageController:
         if not changed_users:
             return known_joined_hosts
 
-        potentially_changed_hosts = set(get_domain_from_id(u) for u in changed_users)
+        potentially_changed_hosts = {get_domain_from_id(u) for u in changed_users}
 
         if not potentially_changed_hosts - known_joined_hosts:
             return known_joined_hosts

synapse/storage/databases/main/roommember.py

@@ -57,7 +57,6 @@ from synapse.types import (
     StrCollection,
     get_domain_from_id,
 )
-from synapse.types.state import StateFilter
 from synapse.util.async_helpers import Linearizer
 from synapse.util.caches import intern_string
 from synapse.util.caches.descriptors import _CacheContext, cached, cachedList