[issue19898] No tests for dequereviter_new

[Christian Heimes]

New submission from Christian Heimes:

According to LCOV the dequereviter_new is never called by any test.

http://tiran.bitbucket.org/python-lcov/Modules/_collectionsmodule.c.gcov.html#1408

----------
components: Library (Lib), Tests
messages: 205305
nosy: christian.heimes, rhettinger
priority: low
severity: normal
stage: needs patch
status: open
title: No tests for dequereviter_new
type: behavior
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19898>
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