Fix windows python 3.8 required dlls not found (#6715)
Fix windows python 3.8 required dlls not found (#6715)

* Fix windows python 3.8

* Update torchvision/extension.py

Co-authored-by: Vasilis Vryniotis <d748cd3f763058dcf20e5489b9bc2373b78db68c@users.noreply.github.com>

* Update torchvision/extension.py

Co-authored-by: Vasilis Vryniotis <d748cd3f763058dcf20e5489b9bc2373b78db68c@users.noreply.github.com>
pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision