SpaceAfterOpeningBrace does not honour ignoreEmptyBlock for constructors

[erdi]

The following causes a violation:

class EventAttendance {
    EventAttendance() {}
}

even with the following ruleset configuration:

ruleset {
    ruleset("rulesets/formatting.xml") {
        SpaceAfterOpeningBrace {
            ignoreEmptyBlock = true
        }
    }
}