[issue29407] Remove redundant ensure_future() calls in factorial example

[Roundup Robot]

Roundup Robot added the comment:

New changeset e4f6874abda6 by Berker Peksag in branch '3.5':
Issue #29407: Remove redundant ensure_future() calls in factorial example
https://hg.python.org/cpython/rev/e4f6874abda6

New changeset 7196ab02b7ce by Berker Peksag in branch '3.6':
Issue #29407: Merge from 3.5
https://hg.python.org/cpython/rev/7196ab02b7ce

New changeset 0990a071751f by Berker Peksag in branch 'default':
Issue #29407: Merge from 3.6
https://hg.python.org/cpython/rev/0990a071751f

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nosy: +python-dev

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<http://bugs.python.org/issue29407>
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