Request for code review (smallest review ever)

[keith mcguigan]

Well, ok, I guess it's not the smallest code change -- I think I've matched this 
before -- but I guarantee you won't see one smaller than this!

It's a one-liner (a one-character-er) to accept 0 as a successful return from an 
ioctl() call, for registering dtrace providers.

http://cr.openjdk.java.net/~kamg/7145589/webrev.00/

--
- Keith