[PATCH 0/1] MR5871: ntdll: Fix macOS build errors with Xcode 16.

[Brendan Shanks (＠bshanks)]

LLVM 17 or 18 no longer allow non-private labels to appear between
.cfi_startproc/endproc when targeting Mach-O.

Similar fixes as in commit 295d521b11644fb76c36854336b13c2155bb7d79.

Since this is needed for 2 out of 4 architectures, would it be better to do it for all 4 and then modify the shared `__wine_syscall_dispatcher_return()` prototype?