GUI_App::run_wizard : Deallocate a memory after close ConfigWizard.

+ Added wait cursor when ConfigWizard is created to inform user about activity

src/slic3r/GUI/ConfigWizard.cpp

@@ -3323,6 +3323,8 @@ ConfigWizard::ConfigWizard(wxWindow *parent)
     : DPIDialog(parent, wxID_ANY, wxString(SLIC3R_APP_NAME) + " - " + _(name()), wxDefaultPosition, wxDefaultSize, wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
     , p(new priv(this))
 {
+    wxBusyCursor wait;
+
     this->SetFont(wxGetApp().normal_font());
 
     p->load_vendors();

src/slic3r/GUI/GUI_App.cpp

@@ -3057,6 +3057,13 @@ bool GUI_App::run_wizard(ConfigWizard::RunReason reason, ConfigWizard::StartPage
     auto wizard = new ConfigWizard(mainframe);
     const bool res = wizard->run(reason, start_page);
 
+    // !!! Deallocate memory after close ConfigWizard.
+    // Note, that mainframe is a parent of ConfigWizard.
+    // So, wizard will be destroyed only during destroying of mainframe
+    // To avoid this state the wizard have to be disconnected from mainframe and Destroyed explicitly
+    mainframe->RemoveChild(wizard);
+    wizard->Destroy();
+
     if (res) {
         load_current_presets();