QNX: hardcode on-demand SSL root cert loading

The c_rehash'ed symlinks are always there on QNX, so no need to check
at every app start for the feature. This saves ~ 17ms at each app
start.

Task-number: QTBUG-32549
Change-Id: Ia9df60aba9d1bd70868b7004b847867a2128f600
Reviewed-by: Andreas Holzammer <andreas.holzammer@kdab.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>

src/network/ssl/qsslsocket_openssl.cpp

@@ -522,6 +522,8 @@ void QSslSocketPrivate::ensureCiphersAndCertsLoaded()
     } else {
         qWarning("could not load crypt32 library"); // should never happen
     }
+#elif defined(Q_OS_QNX)
+    s_loadRootCertsOnDemand = true;
 #elif defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
     // check whether we can enable on-demand root-cert loading (i.e. check whether the sym links are there)
     QList<QByteArray> dirs = unixRootCertDirectories();