Make `plugin :tmp_restart` behavior correct in Windows.
Make `plugin :tmp_restart` behavior correct in Windows.

Inspired by below PR.

https://github.com/rails-api/active_model_serializers/pull/1014

respire/puma,ngpestelos/puma,puma/puma,eileencodes/puma,unleashed/puma,kyledrake/puma,kyledrake/puma,looker/puma,respire/puma,kyledrake/puma,prathamesh-sonpatki/puma,looker/puma,unleashed/puma,unleashed/puma,looker/puma,eileencodes/puma,looker/puma,eileencodes/puma,prathamesh-sonpatki/puma,ngpestelos/puma,puma/puma,eileencodes/puma,respire/puma,prathamesh-sonpatki/puma,unleashed/puma,ngpestelos/puma,prathamesh-sonpatki/puma,puma/puma,puma/puma,respire/puma,kyledrake/puma,ngpestelos/puma