rand_win.c: loosen version requirements for BCryptGenRandom
BCryptGenRandom() is available for Windows Vista and newer versions, see
# endif
# include <windows.h>
-/* On Windows 7 or higher use BCrypt instead of the legacy CryptoAPI */
-# if defined(_MSC_VER) && defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0601
+/* On Windows Vista or higher use BCrypt instead of the legacy CryptoAPI */
+# if defined(_MSC_VER) && defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0600
# define USE_BCRYPTGENRANDOM
# endif
