Fix endian.hpp copy-and-paste error reported by Vicente Botet.

git-svn-id: http://svn.boost.org/svn/boost/sandbox/endian@49083 b8fc166d-592f-0410-95f2-cb63ce0dd405

boost/integer/endian.hpp

@@ -302,7 +302,7 @@ namespace boost
         typedef T value_type;
 #   ifndef BOOST_ENDIAN_NO_CTORS
         endian() BOOST_ENDIAN_DEFAULT_CONSTRUCT
-#     ifdef BOOST_BIG_ENDIAN
+#     ifdef BOOST_LITTLE_ENDIAN
         endian(T val) : m_value(val) { }
 #     else
         explicit endian(T val)    { detail::store_little_endian<T, sizeof(T)>(&m_value, val); }