Shared/OpenSSLCrypto: Add switch to fix build under Mac

src/server/shared/Cryptography/OpenSSLCrypto.cpp

@@ -33,7 +33,12 @@ static void lockingCallback(int mode, int type, const char* /*file*/, int /*line
 
 static void threadIdCallback(CRYPTO_THREADID * id)
 {
+/// ACE_thread_t turns out to be a struct under Mac OS.
+#ifndef __APPLE__
     CRYPTO_THREADID_set_numeric(id, ACE_Thread::self());
+#else
+    CRYPTO_THREADID_set_pointer(id, ACE_Thread::self());
+#endif
 }
 
 void OpenSSLCrypto::threadsSetup()