From 2518d3c1c0b907b1cabdaa647c7affaa01ffca63 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Thu, 30 Apr 2009 00:23:11 +0000
Subject: [PATCH] prevent ref cycles by removing bound method on close()

---
 Lib/aifc.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Lib/aifc.py b/Lib/aifc.py
index 8e4f864495d..f9db3f48355 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -732,6 +732,8 @@ class Aifc_write:
         if self._comp:
             self._comp.CloseCompressor()
             self._comp = None
+        # Prevent ref cycles
+        self._convert = None
         self._file.flush()
         self._file = None