tests: close pipes in link-timeout

Don't forget to close pipe fds after link-timeout tests

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/02771d9c5820fa0fa2fc87f697f0f232b9b23a0d.1629020550.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed