Returning a ternary if in a method inside a macro yields a syntax error

[spalladino]

In the following code:

record Foo do
  def foo
    return true ? 1 : 2
  end
end

puts Foo.new.foo

The compiler yields:

Syntax error in src/foo.cr:4: 'else' is useless without 'rescue'

Note that if the return keyword is removed (which is optional in this example), the code compiles fine.

Found in Crystal 0.22.0 [3c71228] (2017-04-20) LLVM 3.5.0, on the crystallang/crystal:0.20.0 docker image.