fixed uninitialized variable (depending on wxChoice ctor used it resulted in an out of bounds wxChoice::GetSelection() return value)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35481 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/choice.cpp

@@ -136,6 +136,8 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
                              const wxValidator& validator,
                              const wxString& name)
 {
+    Init();
+
     // initialize wxControl
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return false;