A few _WIN32_WINNT are misspelled as WIN32_WINNT.

reactos/dll/win32/setupapi/driver.c

 568 #if WIN32_WINNT < 0x0600

reactos/dll/win32/shell32/wine/shellpath.c

 648 #if WIN32_WINNT >= 0x0600

1045 #if WIN32_WINNT >= 0x0600

2274 #if WIN32_WINNT >= 0x0600

reactos/drivers/filesystems/btrfs/fsctl.c

2448 #if WIN32_WINNT >= 0x0600

reactos/sdk/include/psdk/reason.h

  46 #endif /* WIN32_WINNT >= 0x0501 */

reactos/sdk/include/psdk/sdkddkver.h

 131 /* Select Default WIN32_WINNT Value */

reactos/sdk/include/reactos/idl/pnp.idl

 928 cpp_quote("#endif /* WIN32_WINNT >= 0x0501 */")

reactos/sdk/include/xdk/winnt_old.h

3808 #if 1 /* (WIN32_WINNT >= 0x0500) */

3902 #endif /* (WIN32_WINNT >= 0x0501) */