fix wrong specification to remove fiddle
fix wrong specification to remove fiddle

ojundt/msgpack-ruby,larskanis/msgpack-ruby,larskanis/msgpack-ruby,kou/msgpack-ruby,larskanis/msgpack-ruby,nurse/msgpack-ruby,msgpack/msgpack-ruby,okkez/msgpack-ruby,msgpack/msgpack-ruby,ojundt/msgpack-ruby,nurse/msgpack-ruby,cosmo0920/msgpack-ruby,kou/msgpack-ruby,ojundt/msgpack-ruby,cosmo0920/msgpack-ruby,larskanis/msgpack-ruby,kou/msgpack-ruby,msgpack/msgpack-ruby,kou/msgpack-ruby,ojundt/msgpack-ruby,nurse/msgpack-ruby,okkez/msgpack-ruby,okkez/msgpack-ruby,nurse/msgpack-ruby,cosmo0920/msgpack-ruby,okkez/msgpack-ruby,cosmo0920/msgpack-ruby