ast.to_lua_source adds unnecessary parenthesis for class (and maybe other) arguments

[baurse]

Class(AAirUnit) {
    bar
}

gets turned into

Class(AAirUnit)({
    bar
})

Note that not only are the parenthesis unecessary, the whitespace after the class call is missing as well.

[Garanas]

This is fine - having no parenthesis is purely syntactic sugar.