Allow spam-checker modules to be provide async methods. (#8890)

Spam checker modules can now provide async methods. This is implemented
in a backwards-compatible manner.

1 files changed, 1 insertions, 1 deletions

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

index 96843338ae..2b8aa9443d 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -744,7 +744,7 @@ class EventCreationHandler:
                 event.sender,
             )
 
-            spam_error = self.spam_checker.check_event_for_spam(event)
+            spam_error = await self.spam_checker.check_event_for_spam(event)
             if spam_error:
                 if not isinstance(spam_error, str):
                     spam_error = "Spam is not permitted here"