boostorg/tuple — pull request #1 by timblechmann (2013-12-07 11:23:59+00:00)
Title: tuple: silence gcc warning

fix warning:

```
../../../boost/tuple/detail/tuple_basic.hpp: In function ‘typename boost::tuples::access_traits >::type>::const_type boost::tuples::get(const boost::tuples::cons&)’:
../../../boost/tuple/detail/tuple_basic.hpp:228:45: warning: typedef ‘cons_element’ locally defined but not used [-Wunused-local-typedefs]
typedef BOOST_DEDUCED_TYPENAME impl::type cons_element;
```