() whoops...

Author: mikeshardmind

src/async_utils/_simple_lock.py

@@ -71,5 +71,5 @@ def _maybe_wake(self) -> None:
                     fut = next(iter(self._waiters))
                 except StopIteration:
                     return
-                if not fut.done:
+                if not fut.done():
                     fut.set_result(None)