Support encodings in wxGTK_CONV_BACK() in the same way as we do it in

wxGTK_CONV(), i.e. return the string containing text in ISO-8859-1 encoding
and not UTF-8 if the controls font was set to have ISO-8859-1 encoding


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44577 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/menu.cpp

@@ -1547,8 +1547,9 @@ static wxString GetGtkHotKey( const wxMenuItem& item )
             default:
                 if ( code < 127 )
                 {
-                    wxString name = wxGTK_CONV_BACK( gdk_keyval_name((guint)code) );
-                    if ( name )
+                    const wxString
+                        name = wxGTK_CONV_BACK_SYS(gdk_keyval_name((guint)code));
+                    if ( !name.empty() )
                     {
                         hotkey << name;
                         break;