USBI_TRANSFER_CANCELLING 1205 third_party/libusb/src/libusb/core.c 			if (itransfer->flags & USBI_TRANSFER_CANCELLING)
USBI_TRANSFER_CANCELLING 1507 third_party/libusb/src/libusb/io.c 	itransfer->flags |= USBI_TRANSFER_CANCELLING;