Fix typo where we ended up with multiple `WorkerLocksHandler` (#16220)

I don't think has caused any actual issues.

Introduced in #15891

1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/server.py b/synapse/server.py

index fd16dacd0d..71ead524d6 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -913,6 +913,7 @@ class HomeServer(metaclass=abc.ABCMeta):
         """Usage metrics shared between phone home stats and the prometheus exporter."""
         return CommonUsageMetricsManager(self)
 
+    @cache_in_self
     def get_worker_locks_handler(self) -> WorkerLocksHandler:
         return WorkerLocksHandler(self)