[summary] Clear model on leave

src/modules/summary/Config.cpp

@@ -125,3 +125,9 @@ Config::collectSummaries( const Calamares::ViewStep* upToHere )
 
     m_summary->setSummaryList( steps );
 }
+
+void
+Config::clearSummaries()
+{
+    m_summary->setSummaryList( {} );
+}

src/modules/summary/Config.h

@@ -74,6 +74,8 @@ public:
 
     ///@brief Called later, to load the model once all viewsteps are there
     void collectSummaries( const Calamares::ViewStep* upToHere );
+    ///@brief Clear the model of steps (to avoid dangling widgets)
+    void clearSummaries();
 
     QAbstractListModel* summaryModel() const { return m_summary; }
 

src/modules/summary/SummaryViewStep.cpp

@@ -92,5 +92,6 @@ SummaryViewStep::onActivate()
 void
 SummaryViewStep::onLeave()
 {
+    m_config->clearSummaries();
     m_widget->onLeave();
 }