ensure correct linking of the socket manager initializer for static builds of wxWidgets

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58059 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/socketiohandler.cpp

@@ -24,6 +24,7 @@
 
 #include "wx/apptrait.h"
 #include "wx/private/socket.h"
+#include "wx/link.h"
 
 // ============================================================================
 // implementation
@@ -111,4 +112,8 @@ static struct ManagerSetter
     }
 } gs_managerSetter;
 
+
+// see the relative linker macro in socket.cpp
+wxFORCE_LINK_THIS_MODULE( socketiohandler );
+
 #endif // wxUSE_SOCKETS