Avoid warnings in hd/1 and tl/1 tests (#6006)
Avoid warnings in hd/1 and tl/1 tests (#6006)


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