[PATCH xserver] exa: promise not to touch the data when swapping pointers

[Adam Jackson]

On Wed, 2018-03-21 at 16:37 +0000, Eric Engestrom wrote:

> Hmm, forgot to reply, sorry about that:
> I've had the patch locally for just about forever, so I don't remember
> exactly, but I think I hit some issue with one of the callers and when
> I looked at the implementations I noticed this.

I hit this warning early on in the meson conversion as well, and I
think 712b02ec72 fixed it by getting HAVE_TYPEOF defined. Thanks for
fixing the other half of it!

- ajax