Indentation of `if` fails after a ->

These two (minimal-ish) cases break the indentation of `if` (by both indenting the `if` one level less than it should be indented):

``` elixir
case :foo do
  1 ->
  if true do
    :foo
  end
  2 ->
    false
end
```

and 

``` elixir
fn x ->
if true do
end
end
```

FWIW, `unless` seems to work in those cases.
