Mon, 13 Mar 2017 17:49:13 -0700 parsers: handle refcounting of "parents" consistently
Gregory Szorc <gregory.szorc@gmail.com> [Mon, 13 Mar 2017 17:49:13 -0700] rev 31435
parsers: handle refcounting of "parents" consistently Py_None can be refcounted like any other Python object. So do that.
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