Fix GCC compile on AIX

In file included from test.cpp:31:0:
validate.h:213:93: error: operator '||' has no right operand
 #elif (_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _BSD_SOURCE || _SVID_SOURCE || _POSIX_SOURCE)

1 files changed, 1 insertions, 1 deletions

diff --git a/validate.h b/validate.h
index a0333ccf..e95b2985 100644
--- a/validate.h
+++ b/validate.h
@@ -210,7 +210,7 @@ inline std::string TimeToString(const time_t& t)
 	CRYPTOPP_ASSERT(err == 0);

 

 	std::string str(err == 0 ? timeBuf : "");

-#elif (_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE >= 1 || _BSD_SOURCE >= 1 || _SVID_SOURCE >= 1 || _POSIX_SOURCE >= 1)

+#elif (_POSIX_C_SOURCE >= 1 || _XOPEN_SOURCE || _BSD_SOURCE || _SVID_SOURCE || defined(_POSIX_SOURCE))

 	tm localTime = {};

 	char timeBuf[64];

 	char* timeString = ::asctime_r(::localtime_r(&t, &localTime), timeBuf);