tests/crashgetbundler.py

xdiff: fix leak in hunk_consumer()

Spotted by ASAN.

Since PyList_Append() does not "steal" a reference, Py_DECREF() is always
required. Perhaps, this is the largest leak in this series.

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
        changegroup,
        error,
        extensions
    )

def abort(orig, *args, **kwargs):
    raise error.Abort(_('this is an exercise'))

def uisetup(ui):
    extensions.wrapfunction(changegroup, 'getbundler', abort)