[FIX] Inherited inverse field of One2many

System will crash if the inverse field of One2many is inherited and the parent model is not setup.
The statement `comodel._setup_fields()` has already done `comodel._inherits_reload()`.
The method `_inherits_reload()` should never be called twice on a model; the implementation of `_setup_fields()` is such that all inherited fields are known and properly set up.