Anonymous functions inside functions break indentation

[mattdeboard]

Code that should look like this:

defmodule FooMod do
  def foo do
    fn(a, b) -> a + b end
  end
end

actually looks like this:

defmodule FooMod do
  def foo do
    fn(a, b) -> a + b end
end
end

The anon function's end is being treated as the closing of foo method.