[PATCH 0/1] MR3029: ntdll: fix incorrect implement of __wine_syscall_dispatcher_return on x86_64

[Fan WenJie (＠fanwenjie)]

Signed-off-by: fanwenjie

On unixlib, macro WINAPI means nothing.
In windef.h

```
#ifdef WINE_UNIX_LIB
# define __stdcall
# define __cdecl
# define __fastcall
#elif !defined(_MSC_VER) && !defined(__MINGW32__)
```
```
extern void WINAPI DECLSPEC_NORETURN __wine_syscall_dispatcher_return( void *frame, ULONG_PTR retval ) DECLSPEC_HIDDEN;
```

equals
```
extern void __attribute__((sysv_abi)) DECLSPEC_NORETURN __wine_syscall_dispatcher_return( void *frame, ULONG_PTR retval ) DECLSPEC_HIDDEN;
```

But implementation of __wine_syscall_dispatcher_return is ms_abi on x86_64, the patch fixed it