This fixes the styles used in the native wxGTK version after changes in r63654: we must initialize base class m_pickerStyle now and the code didn't do this before resulting in various asserts and incorrect behaviour. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63690 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775