Fix optional comma test in tuple_test
Fix optional comma test in tuple_test

pedrosnk/elixir,ggcampinho/elixir,joshprice/elixir,elixir-lang/elixir,lexmag/elixir,kimshrier/elixir,gfvcastro/elixir,kimshrier/elixir,beedub/elixir,antipax/elixir,lexmag/elixir,antipax/elixir,pedrosnk/elixir,kelvinst/elixir,gfvcastro/elixir,ggcampinho/elixir,kelvinst/elixir,beedub/elixir,michalmuskala/elixir