allow Session to call Session::remove_stripable_by_id()

diff --git a/libs/ardour/ardour/selection.h b/libs/ardour/ardour/selection.h
index 6d022b115a8d68af25f1b99baf7f9fc71c04f861..08c2d1eda1a1a0e2c9e8ab299808977d28010484 100644 (file)
--- a/libs/ardour/ardour/selection.h
+++ b/libs/ardour/ardour/selection.h
@@ -75,6 +75,7 @@ class LIBARDOUR_API CoreSelection : public PBD::Stateful {
 
   protected:
        friend class Stripable;
+       friend class Session;
        void remove_stripable_by_id (PBD::ID const &);
 
   private: