Missing #include from glib/gwin32.c ?

[John Emmas <johne53 tiscali co uk>]

I just updated glib (from git) and tried to build the glib-2-44 branch, 
using MSVC8.  I'm getting a compiler error at line 568 which looks like 
this:-

      typedef NTSTATUS fRtlGetVersion (PRTL_OSVERSIONINFOEXW);

Basically, my compiler doesn't recognise NTSTATUS.  If I substitute LONG 
instead of NTSTATUS, everything builds okay, so I'm assuming there's a 
missing #include.  I tried #including <ntstatus.h> and when that didn't 
work, I tried #include <winnt.h> (but that didn't work either).

Can anyone advise me what needs to get #included in order for NTSTATUS 
to get recognised?  Thanks.

John
P.S. I assume the same problem might also exist in 'master' although I 
haven't had a chance to try that yet.