Fix Qt6 deprecation warning about QString::fromUcs4

[lyx.git] / src / Undo.h

diff --git a/src/Undo.h b/src/Undo.h
index c2b9b5d074b4e6e8fbef33e40e5aac73e74df3b3..887f7627e1d54854800a34c00678971f77d1f63e 100644 (file)
--- a/src/Undo.h
+++ b/src/Undo.h
@@ -22,11 +22,8 @@
 namespace lyx {
 
 class Buffer;
-class BufferParams;
 class CursorData;
 class Inset;
-class MathData;
-class ParagraphList;
 
 /// This is used to combine consecutive undo recordings of the same kind.
 enum UndoKind {
@@ -139,7 +136,7 @@ private:
  */
 class UndoGroupHelper {
 public:
-       UndoGroupHelper(Buffer * buf = 0);
+       UndoGroupHelper(Buffer * buf);
 
        ~UndoGroupHelper();