message: bizarre workaround for MSVC
diff: @@ -392,7 +392,7 @@ private:
  ENOKI_CHKSCALAR("Copy constructor");
  }
  - template <typename T, size_t... Is, enable_if_t<detail::broadcast<T, Derived>> = 0>
  + template <typename T, enable_if_t<detail::broadcast<T, Derived>> = 0, size_t... Is>
  ENOKI_INLINE StaticArrayImpl(T&& value, std::index_sequence<Is...>)
  : m_data{{ (Is, value)... }} {
  ENOKI_CHKSCALAR("Copy constructor (broadcast)");
  