Compile error with gcc

This code:
```
msgpack::sbuffer ss;
msgpack::pack(ss, msgpack::type::make_tuple(1, "toto", msgpack::type::make_tuple()));
```
compile fine with clang but produce error with gcc.

But this code:
```
msgpack::sbuffer ss;
auto tt = msgpack::type::make_tuple();
msgpack::pack(ss, msgpack::type::make_tuple(1, "toto", tt));
```
which is equivalent compile fine with both.