In the previous changeset a cast of myminor to u_int were

removed, which will cause problems on architectures where
longs are longer than ints, for instance,
	"mknod foo c 0 0xffff00ff"
would fail in such cases.

Use a proper cast instead.

Prompted by:	bde

sbin/mknod/mknod.c

@@ -138,7 +138,7 @@ main(int argc, char **argv)
 	range_error |= errno;
 	dev = makedev(mymajor, myminor);
 	if (range_error || major(dev) != (u_int) mymajor ||
-	    minor(dev) != myminor)
+	    (long)(u_int)minor(dev) != myminor)
 		errx(1, "major or minor number too large");
 
 	uid = gid = -1;