Update windows.py (#530)
Update windows.py (#530)

Add `Ex` to imphooks
cmaruti/vivisect,vivisect/vivisect,atlas0fd00m/vivisect,vivisect/vivisect,cmaruti/vivisect,atlas0fd00m/vivisect,atlas0fd00m/vivisect,cmaruti/vivisect,vivisect/vivisect