Fixed parent mapper name in generated mapper class of a member class

[mariotaku]

For a example, if you have classes structured like this:

 public class Sample {

    @JsonObject
    public class A {

    }

    @JsonObject
    public class B extends A {

    }

 }

You'll see errors during complication.

That's because Sample$B$$JsonObjectMapper#parentObjectMapper
referenced to wrong class name for A Sample$A instead of Sample.A.