wx/*: fix a few string additions

modules/gui/wxwindows/preferences_widgets.cpp

@@ -458,12 +458,12 @@ void  ModuleListCatConfigControl::OnUpdate( wxCommandEvent &event )
             if( b_waschecked )
             {
                 /* Maybe not the clest solution */
-                if( ! newtext.Replace(wxU(",")
+                if( ! newtext.Replace(wxString(wxT(","))
                                       +wxU(pp_checkboxes[i]->psz_module),
-                                      wxU("")))
+                                      wxT("")))
                 {
-                    if( ! newtext.Replace(wxU(pp_checkboxes[i]->psz_module)
-                                           + wxU(","),wxU("")))
+                    if( ! newtext.Replace(wxString(wxU(pp_checkboxes[i]->psz_module))
+                                           + wxT(","),wxT("")))
 		    { 
                         newtext.Replace(wxU(pp_checkboxes[i]->psz_module),wxU(""));
                     }

modules/gui/wxwindows/timer.cpp

@@ -141,7 +141,7 @@ void Timer::Notify()
             if( psz_now_playing && *psz_now_playing )
             {
                 p_main_interface->statusbar->SetStatusText(
-                    wxU(psz_now_playing) + wxT( " - " ) +
+                    wxString(wxU(psz_now_playing)) + wxT( " - " ) +
                     wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
             }
             else
@@ -211,7 +211,7 @@ void Timer::Notify()
             if( psz_now_playing && *psz_now_playing )
             {
                 p_main_interface->statusbar->SetStatusText(
-                    wxU(psz_now_playing) + wxT( " - " ) +
+                    wxString(wxU(psz_now_playing)) + wxT( " - " ) +
                     wxU(p_intf->p_sys->p_input->input.p_item->psz_name), 2 );
             }
             else