QSslConfiguration: fix crash when accessing null pointer

We were accessing the d-pointer of a QSslConfiguration which is
initialized lazily.

Reviewed-by: Markus Goetz
Task-number: QTBUG-13265

1 files changed, 5 insertions, 0 deletions

diff --git a/src/network/ssl/qsslsocket.cpp b/src/network/ssl/qsslsocket.cpp
index 91265f3..f18c629 100644
--- a/src/network/ssl/qsslsocket.cpp
+++ b/src/network/ssl/qsslsocket.cpp
@@ -1966,6 +1966,11 @@ void QSslConfigurationPrivate::deepCopyDefaultConfiguration(QSslConfigurationPri
     QMutexLocker locker(&globalData()->mutex);
     const QSslConfigurationPrivate *global = globalData()->config.constData();
 
+    if (!global) {
+        ptr = 0;
+        return;
+    }
+
     ptr->ref = 1;
     ptr->peerCertificate = global->peerCertificate;
     ptr->peerCertificateChain = global->peerCertificateChain;