Windows: Stop leaking event handle when destroying condition variables
Windows: Stop leaking event handle when destroying condition variables

usbi_cond_destroy() must close the handle created by usbi_cond_intwait().

bert/libusb,hjelmn/libusb-darwin,dasdeepak/libusb,legege/libusb,ashima/libusb,dasdeepak/libusb,legege/libusb,hjelmn/libusb-darwin,tenderlove/libusb,bert/libusb,dasdeepak/libusb,legege/libusb,ashima/libusb,tenderlove/libusb,ashima/libusb