Make Owned friendly to other template specializations

diff --git a/source/game/owned.h b/source/game/owned.h
index a30f040d58269019cd3634159100e7d2f8a976c3..d6e4348fdd45b43c65e460182f7de839b01b16a8 100644 (file)
--- a/source/game/owned.h
+++ b/source/game/owned.h
@@ -15,6 +15,9 @@ class Entity;
 template<typename T>
 class Owned: public Handle<T>
 {
+       template<typename U>
+       friend class Owned;
+
 public:
        Owned() = default;