reverted wxSocket changes of rev 48723 as they broke linking under non-Unix systems

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48734 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/fdiodispatcher.cpp

@@ -55,7 +55,7 @@ wxFDIODispatcher *wxFDIODispatcher::Get()
 #endif // wxUSE_EPOLL_DISPATCHER
 #if wxUSE_SELECT_DISPATCHER
             gs_dispatcher = wxSelectDispatcher::Create();
-#endif // wxUSE_SELECT_DISPATCHER
+#endif // wxUSE_WCHAR_T
     }
 
     wxASSERT_MSG( gs_dispatcher, _T("failed to create any IO dispatchers") );