avoid assertion when using alternate cursors (thx @seargedp)

as per https://github.com/Searge-DP/Bonzomatic/commit/46d958346b1a88478aa3a0d29819e1264aa9f51f

ShaderEditor.cpp

@@ -349,3 +349,18 @@ void ShaderEditor::SetPosition( Scintilla::PRectangle rect )
 {
   wMain.SetPosition(rect);
 }
+
+bool ShaderEditor::FineTickerRunning( TickReason )
+{
+  return false;
+}
+
+void ShaderEditor::FineTickerStart( TickReason, int, int )
+{
+
+}
+
+void ShaderEditor::FineTickerCancel( TickReason )
+{
+
+}

ShaderEditor.h

@@ -92,7 +92,11 @@ public:
   void SetMouseCapture(bool on);
   bool HaveMouseCapture();
   sptr_t DefWndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
+
   void SetTicking(bool on);
+  bool FineTickerRunning(TickReason);
+  void FineTickerStart(TickReason, int, int);
+  void FineTickerCancel(TickReason);
 
   void SetText( char * buf );
   void GetText( char * buf, int len );