[cairo] Compile failing in xcb backend

[James Cloos]

>>>>> "Chris" == Chris Wilson <chris at chris-wilson.co.uk> writes:

Chris> Thanks, I've pushed the pair of compilation fixes. I'm intrigued
Chris> to know how well make check is performing on those platforms -

I've got an emerge going right now; once it is done I'll try a make
check on it.

Chris> I presume xcb needs similar fixes as have been applied to the
Chris> xlib backend.

Seems likely.

-JimC