One #ifdef too much, and I broke all windows buildbots:

in pyconfig.h, NTDDI_WIN2KSP4 is not *yet* defined, but will be at some point on some modules.

Let this line even for older SDKs, they don't use it anyway.

PC/pyconfig.h

@@ -167,10 +167,8 @@ WIN32 is still required for the locale module.
 #else
 #define Py_WINVER 0x0500
 #endif
-#ifdef NTDDI_WIN2KSP4
 #define Py_NTDDI NTDDI_WIN2KSP4
 #endif
-#endif
 
 /* We only set these values when building Python - we don't want to force
    these values on extensions, as that will affect the prototypes and