Fix test for io_uring link_timeout

The old test "timeout_link_chain1" was ported from liburing test_timeout_link_chain1
https://github.com/axboe/liburing/blob/509873c4454012c5810c728695c21911c82acdc4/test/link-timeout.c#L539-L628
However it turns out that both fails with EBADF (-9) on Linux kernel 5.4.

The this new test skips properly on Linux kernel 5.4
and passes on Linux kernel 5.11.
0714832c21Hiroaki Nakamura committed on 12/1/2021, 10:30:33 PM· committed by Andrew Kelleyparent70dcdcb
1 file changedLine totals unavailable