fix crash

src/balancing/ArenaView.cpp

@@ -63,6 +63,11 @@ double ArenaView::gameSpeed() const
     return m_gameSpeedMultiplier;
 }
 
+void ArenaView::stopRendering()
+{
+    m_renderTimer->stop();
+}
+
 void ArenaView::togglePause()
 {
     if (m_gameSpeedMultiplier < 0.001)

src/balancing/ArenaView.h

@@ -29,6 +29,7 @@ public:
     void setGameSpeed(double multiplier);
     double gameSpeed() const;
     void togglePause();
+    void stopRendering();
 
 signals:
     void speedChanged(double multiplier);

src/balancing/InspectWindow.cpp

@@ -112,6 +112,7 @@ InspectWindow::InspectWindow(ArenaSimulation* sim, const VisualsConfig* visuals,
 
 void InspectWindow::closeEvent(QCloseEvent* event)
 {
+    m_arenaView->stopRendering();
     m_pollTimer->stop();
     emit closed();
     event->accept();