if we have no interrupt endpoint, do no try to queue interrupt URBs. fixes https://github.com/gphoto/libgphoto2/issues/234
if we have no interrupt endpoint, do no try to queue interrupt URBs.
fixes https://github.com/gphoto/libgphoto2/issues/234

gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2,gphoto/libgphoto2