[ewg] IB/ipoib: Fix neigh destructor oops for kernels older than 2.6.21

[Or Gerlitz]

Eli Cohen wrote:
>> 1 day is not enough time to review the patch, as of the importance, I 
>> suggest you ask Roland and Alexey to review it and say what their 
>> opinion on the solution, now once we all understand the problem.
> I think I did ask, not explicitly but I guess it is understood that the
> patch was sent for review. Anyway now it's explicit: I am asking all the
> folks to review the patch and send comments. Alternate approaches
> towards solving the same problem are welcome too.
>
Eli,

I see that you have merged the patch, so sorry, but I am not going to 
look on it. Have someone else reviewed it before the merge?

Or.