[issue2231] Memory leak in itertools.chain()

[Hirokazu Yamamoto]

New submission from Hirokazu Yamamoto:

Fixed memory leak in itertools.chain().
This fixes following refleak errors shown in issue2223.
test_deque test_heapq test_itertools test_list test_set test_userlist

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components: Extension Modules
files: fix_leak.patch
keywords: patch
messages: 63252
nosy: ocean-city
severity: normal
status: open
title: Memory leak in itertools.chain()
type: resource usage
versions: Python 2.6, Python 3.0
Added file: http://bugs.python.org/file9602/fix_leak.patch

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<http://bugs.python.org/issue2231>
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