Convert room member storage tuples to attrs. (#10629)

Instead of using namedtuples. This helps with asserting type hints
and code completion.

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py

index e1c544a3c9..4e8f7f1d85 100644
--- a/synapse/handlers/initial_sync.py
+++ b/synapse/handlers/initial_sync.py
@@ -151,7 +151,7 @@ class InitialSyncHandler(BaseHandler):
             limit = 10
 
         async def handle_room(event: RoomsForUser):
-            d = {
+            d: JsonDict = {
                 "room_id": event.room_id,
                 "membership": event.membership,
                 "visibility": (