Add empty slots to AbstractMixin

It is not detected by the standard test because it is registered as mixin.
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Cédric Krier committed 2022-07-01 14:46:34 +02:00
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commit da82ad86fd
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@@ -7,6 +7,7 @@ from trytond.pool import Pool
class AbstractMixin:
__slots__ = ()
@classmethod
def _pos_sale_line(cls, length, index, company_id=None):