Use the clear() method in PrepareManager.maintain()

diff --git a/psycopg/psycopg/_preparing.py b/psycopg/psycopg/_preparing.py
index 50bee31e52ed409f43ce96e46fa5e46e9461c78a..6cf1aebecc0e390132c360f7629faa6f2d06304f 100644 (file)
--- a/psycopg/psycopg/_preparing.py
+++ b/psycopg/psycopg/_preparing.py
@@ -88,8 +88,7 @@ class PrepareManager:
                 if cmdstat and (
                     cmdstat.startswith(b"DROP ") or cmdstat == b"ROLLBACK"
                 ):
-                    self._prepared.clear()
-                    return b"DEALLOCATE ALL"
+                    return self.clear()
         return None
 
     def setdefault(