Add const and std::as_const

src/moodbar/moodbarproxystyle.cpp

@@ -391,7 +391,8 @@ void MoodbarProxyStyle::ShowContextMenu(const QPoint pos) {
   }
 
   // Update the currently selected style
-  for (QAction *action : style_action_group_->actions()) {
+  const QList<QAction*> actions = style_action_group_->actions();
+  for (QAction *action : actions) {
     if (static_cast<MoodbarRenderer::MoodbarStyle>(action->data().toInt()) == moodbar_style_) {
       action->setChecked(true);
       break;