equals generate by jute potentially cause NPE

jute generate equals as follow

    String genJavaEquals(String fname, String peer) {
        return "    ret = " + fname + ".equals(" + peer + ");\n";
    }

if fname is null at the runtime, then a NullPointerException would be thrown, see this report for instance.

Java already solved this problem by using java.util.Objetcs.equals, I address this issue along with ZOOKEEPER-3290 in GH-839. But I need input from CPP and CSharp side.

BTW, is there anybody use jute's CSharp version or even CPP version?