r15402 breakage

[Phillip Susi]

The changes in this revision broke building, I get this:

ntoskrnl: [CC]      io/pnpmgr.c
io/pnpmgr.c: In function `IoGetDeviceProperty':
io/pnpmgr.c:63: warning: 'Data' might be used uninitialized in this function
mingw32-make[1]: *** [io/pnpmgr.o] Error 1
mingw32-make: *** [ntoskrnl] Error 2