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-rw-r--r--synapse/handlers/federation.py11
1 files changed, 5 insertions, 6 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 677532c87b..8ee9434c9b 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -808,13 +808,12 @@ class FederationHandler(BaseHandler):
         event_ids = list(extremities.keys())
 
         logger.debug("calling resolve_state_groups in _maybe_backfill")
+        resolve = logcontext.preserve_fn(
+            self.state_handler.resolve_state_groups_for_events
+        )
         states = yield logcontext.make_deferred_yieldable(defer.gatherResults(
-            [
-                logcontext.preserve_fn(self.state_handler.resolve_state_groups)(
-                    room_id, [e]
-                )
-                for e in event_ids
-            ], consumeErrors=True,
+            [resolve(room_id, [e]) for e in event_ids],
+            consumeErrors=True,
         ))
         states = dict(zip(event_ids, [s.state for s in states]))