[issue19437] More failures found by pyfailmalloc

[Roundup Robot]

Roundup Robot added the comment:

New changeset f2cd38795931 by Victor Stinner in branch 'default':
Issue #19437: Fix fsconvert_strdup(), raise a MemoryError on PyMem_Malloc()
http://hg.python.org/cpython/rev/f2cd38795931

New changeset f88c6417b9f6 by Victor Stinner in branch 'default':
Issue #19437: Fix _io._IOBase.close(), handle _PyObject_SetAttrId() failure
http://hg.python.org/cpython/rev/f88c6417b9f6

New changeset 0f48843652b1 by Victor Stinner in branch 'default':
Issue #19437: Fix datetime_subtract(), handle new_delta() failure
http://hg.python.org/cpython/rev/0f48843652b1

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