Fix guard for platforms missing epoll

See #34

diff --git a/psycopg3/psycopg3/waiting.py b/psycopg3/psycopg3/waiting.py
index e60702487deed839819ab058d44adb63eddf0c95..a489feab34c93cacce54814041a5448621e80f14 100644 (file)
--- a/psycopg3/psycopg3/waiting.py
+++ b/psycopg3/psycopg3/waiting.py
@@ -235,10 +235,7 @@ def wait_epoll(
         return rv
 
 
-if (
-    selectors.DefaultSelector  # type: ignore[comparison-overlap]
-    is selectors.EpollSelector
-):
+if selectors.DefaultSelector is getattr(selectors, "EpollSelector", None):
     wait = wait_epoll
 
     poll_evmasks = {