Fix wx[Sorted]ArrayString::Index when wxUSE_STL=1, because

it is different than wxArray::Index (second argument is for
case sensitivity, not search direction).
  Use forward declaration for wx[Sorted]ArrayString, where
possible.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22128 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/choice.cpp

@@ -17,6 +17,7 @@
 #if wxUSE_CHOICE
 
 #include "wx/choice.h"
+#include "wx/arrstr.h"
 
 #include "wx/gtk/private.h"