const'ify pointer

src/configuredialog/configuresecuritypage.cpp

@@ -396,8 +396,8 @@ QString SecurityPageSMimeTab::helpAnchor() const
 
 SecurityPageSMimeTab::SecurityPageSMimeTab(QWidget *parent)
     : ConfigModuleTab(parent)
+    , mWidget(new Ui::SMimeConfiguration)
 {
-    mWidget = new Ui::SMimeConfiguration;
     mWidget->setupUi(this);
 
     // Button-group for exclusive radiobuttons

src/configuredialog/configuresecuritypage.h

@@ -116,7 +116,7 @@ private:
     void doLoadOther() override;
 
 private:
-    Ui::SMimeConfiguration *mWidget = nullptr;
+    Ui::SMimeConfiguration *const mWidget;
     QGpgME::CryptoConfig *mConfig = nullptr;
 };