Merged revisions 72135 via svnmerge from

benjaminp · benjaminp · commit cc65c1d9c8fb · 2009-04-30T00:30:08.000Z
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r72135 | benjamin.peterson | 2009-04-29 19:23:11 -0500 (Wed, 29 Apr 2009) | 1 line

  prevent ref cycles by removing bound method on close()
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diff --git a/Lib/aifc.py b/Lib/aifc.py
@@ -690,6 +690,8 @@ def close(self):
               self._datalength != self._datawritten or \
               self._marklength:
             self._patchheader()
+        # Prevent ref cycles
+        self._convert = None
         self._file.flush()
         self._file = None
 
