Annotate `log_function` decorator (#10943)

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

1 files changed, 1 insertions, 1 deletions

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

index 8567cb0e00..8ca5f60b1c 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -245,7 +245,7 @@ class DirectoryHandler:
                 servers = result.servers
         else:
             try:
-                fed_result = await self.federation.make_query(
+                fed_result: Optional[JsonDict] = await self.federation.make_query(
                     destination=room_alias.domain,
                     query_type="directory",
                     args={"room_alias": room_alias.to_string()},