usb: zc0301_core free urb cleanup

- usb_free_urb() cleanup
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/media/video/zc0301/zc0301_core.c

@@ -489,7 +489,7 @@ static int zc0301_start_transfer(struct zc0301_device* cam)
 	return 0;
 
 free_urbs:
-	for (i = 0; (i < ZC0301_URBS) &&  cam->urb[i]; i++)
+	for (i = 0; i < ZC0301_URBS; i++)
 		usb_free_urb(cam->urb[i]);
 
 free_buffers: