test/sq-poll-share: don't ignore wait errors
test/sq-poll-share: don't ignore wait errors

Check io_uring_wait_cqe() result, it's not safe to poke into cqe on
error.

Signed-off-by: Pavel Begunkov <8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com>
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing