headers: Fix compile warning: FACILITY_USERMODE_FILTER_MANAGER redefined

Warning is:

    In file included from mingw-w64-headers/include/winerror.h:4920,
                     from mingw-w64-headers/include/winbase.h:2817,
                     from mingw-w64-headers/include/windows.h:70,
                     from intrincs/RtlSecureZeroMemory.c:2:
    mingw-w64-headers/include/fltwinerror.h:12: warning: "FACILITY_USERMODE_FILTER_MANAGER" redefined
     #define FACILITY_USERMODE_FILTER_MANAGER 0x1f

    In file included from mingw-w64-headers/include/winbase.h:2817,
                     from mingw-w64-headers/include/windows.h:70,
                     from intrincs/RtlSecureZeroMemory.c:2:
    mingw-w64-headers/include/winerror.h:38: note: this is the location of the previous definition
     #define FACILITY_USERMODE_FILTER_MANAGER 31

WinSDK10 header file fltWinError.h contains #ifndef guard. Do same.

Signed-off-by: LIU Hao <lh_mouse@126.com>
1 file changed