Pointers fix

include/gp/utils/pointers.hpp

@@ -36,7 +36,7 @@ namespace gp {
 		unique_ptr<U> cast() {
 			auto save = data;
 			data = nullptr; 
-			return unique_ptr<U>(safe, owner);
+			return unique_ptr<U>(save, owner);
 		}
 
 		T* operator->() {