Fix linux assertion

sandboxes/opencsg/main.cpp

@@ -110,11 +110,9 @@ public:
             m_display->repaint();
         });
         
-        Bind(wxEVT_SIZE, [this](wxSizeEvent &) {
+        Bind(wxEVT_SIZE, [this](wxSizeEvent &) {            
             const wxSize ClientSize = GetClientSize();
-            
             m_display->set_screen_size(ClientSize.x, ClientSize.y);
-            m_display->repaint();
         });
     }