These tests are causing linker errors. Presumably this is like #35782,
which suggests these tests should also be XFAIL or UNSUPPORTED on OpenBSD
as well.
Resilient witness tables and resilient class vtables are built from
descriptors. Make sure we reference the AsyncFunctionPointer of a
method implementation, and not the implementation itself, if the
method is async.
Part of rdar://problem/73625623.