Undo::empty() also returns empty if the list only contains DoNothings

removed unused, unimplemented function

1 files changed, 2 insertions, 1 deletions

diff --git a/muse2/muse/undo.h b/muse2/muse/undo.h
index 5dca82b6..f2a523cc 100644
--- a/muse2/muse/undo.h
+++ b/muse2/muse/undo.h
@@ -119,7 +119,8 @@ struct UndoOp {
       };
 
 class Undo : public std::list<UndoOp> {
-      void undoOp(UndoOp::UndoType, int data);
+   public:
+      bool empty() const;
       };
 
 typedef Undo::iterator iUndoOp;