Fix warning: 128: warning: initialization makes pointer from integer

Note: this file has lots of #if __FreeBSD__ >= 4 etc which needs to be
changed to __FreeBSD_version >= 400000 etc.

sys/dev/usb/urio.c

@@ -124,7 +124,10 @@ Static struct cdevsw urio_cdevsw = {
 	urioopen,	urioclose,	urioread,	uriowrite,
  	urioioctl,	nopoll,		nommap,		nostrategy,
  	"urio",		URIO_CDEV_MAJOR,nodump,		nopsize,
- 	0,		-1
+ 	0,
+#if (__FreeBSD__ < 5)
+ 	-1
+#endif
 };
 #define RIO_UE_GET_DIR(p) ((UE_GET_DIR(p) == UE_DIR_IN) ? RIO_IN :\
 		 	  ((UE_GET_DIR(p) == UE_DIR_OUT) ? RIO_OUT :\