[Intel-gfx] [PATCH i-g-t] igt/syncobj_wait: Don't close the timeline early in wait_snapshot

[Chris Wilson]

Quoting Jason Ekstrand (2017-10-10 21:02:20)
> Closing the sw_sync timeline now signals any remaining fences upon it;
> but test_wait_snapshot requires the fence to continue to be busy so that
> the __syncobj_wait() will return with -ETIME.

Snap!

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Tested-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris