Guard the trap with LOGGING

Index: src/plugins/contrib/dragscroll/dragscrollcfg.h
--- src/plugins/contrib/dragscroll/dragscrollcfg.h.orig
+++ src/plugins/contrib/dragscroll/dragscrollcfg.h
@@ -32,7 +32,9 @@ class cbDragScrollCfg: public cbConfigurationPanel
         wxString GetBitmapBaseName() const;
         void OnApply();
         void OnCancel(){}
+#if defined(LOGGING)
         virtual void InitDialog() { } /*trap*/
+#endif
 
         // pointer to owner of the configuration diaglog needed to
         // complete the OnApply/OnCancel EndModal() logic
