python/dense: fix cast of update

Author: jcarpent

bindings/python/src/expose-qpobject.hpp

@@ -81,12 +81,12 @@ exposeQpObjectDense(pybind11::module_ m)
     .def(
       "update",
       static_cast<void (dense::QP<T>::*)(optional<dense::MatRef<T>>,
-                                         optional<dense::Vec<T>>,
+                                         optional<dense::VecRef<T>>,
                                          optional<dense::MatRef<T>>,
-                                         optional<dense::Vec<T>>,
+                                         optional<dense::VecRef<T>>,
                                          optional<dense::MatRef<T>>,
-                                         optional<dense::Vec<T>>,
-                                         optional<dense::Vec<T>>,
+                                         optional<dense::VecRef<T>>,
+                                         optional<dense::VecRef<T>>,
                                          bool update_preconditioner,
                                          optional<T>,
                                          optional<T>,