fixed some compile issues on non-msvc

app/node/output/track/track.h

@@ -189,6 +189,7 @@ public:
       case kSubtitle:
         return QStringLiteral("s");
       case kCount:
+      case kNone:
         break;
       }
 
@@ -206,6 +207,7 @@ public:
       case kSubtitle:
         return tr("S");
       case kCount:
+      case kNone:
         break;
       }
 

app/widget/nodeview/nodeview.cpp

@@ -1636,7 +1636,7 @@ void NodeView::GroupNodes()
 
 void NodeView::UngroupNodes()
 {
-  static_cast<NodeGroup*>(selected_nodes_.first());
+  //static_cast<NodeGroup*>(selected_nodes_.first());
 }
 
 NodeViewItem *NodeView::UpdateNodeItem(Node *node, bool ignore_own_context)