cosmetic: add missing line between variable declarations and code

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>

src/libinput-seat.c

@@ -105,6 +105,7 @@ static void
 device_removed(struct udev_input *input, struct libinput_device *libinput_device)
 {
 	struct evdev_device *device;
+
 	device = libinput_device_get_user_data(libinput_device);
 	evdev_device_destroy(device);
 }