more fixes for using wxSocket in console applications (patch 1756260)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48723 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/gsockmac.h

@@ -50,6 +50,8 @@ public:
     GAddress *GetPeer();
     GSocketError SetServer();
     GSocket *WaitConnection();
+    // not used under Mac
+    void Notify(bool WXUNUSED(enable)) { }
     bool SetReusable() { return false; }
     GSocketError SetNonOriented();
     GSocketError Connect(GSocketStream stream);