don't use global wxConvUTF8 object internally, it may be unavailable at static objects destruction time git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45973 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
don't use global wxConvUTF8 object internally, it may be unavailable at static objects destruction time git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45973 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775