ClientExtension: Save d-ptr allocation

The d-ptr only contained one other pointer which can be stored directly.
If we should need another attribute, we can just re-add the d-ptr since
it has the same size as the current QXmppClient ptr.

Closes #522.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/client/QXmppClientExtension.h b/src/client/QXmppClientExtension.h
index 62fdd3ac..d05d6448 100644
--- a/src/client/QXmppClientExtension.h
+++ b/src/client/QXmppClientExtension.h
@@ -51,7 +51,8 @@ protected:
     bool injectMessage(QXmppMessage &&message);
 
 private:
-    const std::unique_ptr<QXmppClientExtensionPrivate> d;
+    // m_client can be replaced with a d-ptr if needed (same size)
+    QXmppClient *m_client;
 
     friend class QXmppClient;
 };