don't take EVT_HEADER_END_DRAG into account if it indicates the the drag was cancelled

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/datavgen.cpp

@@ -153,11 +153,14 @@ private:
     }
 
     void OnEndDrag(wxHeaderCtrlEvent& event)
+    {
+        if ( !event.IsCancelled() )
         {
             const unsigned col = event.GetColumn();
             GetColumn(col).SetWidth(event.GetWidth());
             GetOwner()->OnColumnChange(col);
         }
+    }
 
     DECLARE_EVENT_TABLE()
     DECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow)