[2.x][CLOSED] Ext.data.MemoryProxy.load() and success=false

[Evolic]

Hi all,
Today I noticed strange behaviour of the load() method inside Ext.data.MemoryProxy class.
Function body is as follow:

    load : function(params, reader, callback, scope, arg){
        params = params || {};
        var result;
        try {
            result = reader.readRecords(this.data);
        }catch(e){
            this.fireEvent("loadexception", this, arg, null, e);
            callback.call(scope, null, arg, false);
            return;
        }
        callback.call(scope, result, arg, true);
    }

There is no success checking if there is no exceptions. Why?
In my code I'm using this MemoryProxy to parse responseXML:
1. make custom Ajax request
2. get the response
3. read the data using MemoryProxy

In my case I can got success = true or false.

So in my opinion mentioned method should looks like:

    load : function(params, reader, callback, scope, arg){
        params = params || {};
        var result;
        try {
            result = reader.readRecords(this.data);
        }catch(e){
            this.fireEvent("loadexception", this, arg, null, e);
            callback.call(scope, null, arg, false);
            return;
        }
        if (result.success === true) {
            callback.call(scope, result, arg, true);
        } else {
            callback.call(scope, result, arg, false);
        }
    }

[Evolic]

After deeper code investigation I found out that I was wrong,
and my fix do nothing here.
Better Ajax usage:

// Basic request
Ext.Ajax.request({
    url: '?', // URL here
    success: function(response, o) {
        // response handler

        var requestStore = new Ext.data.Store({
            proxy: new Ext.data.MemoryProxy(response.responseXML),
            reader: new Ext.data.XmlReader({
                    record: 'response/data',
                    success: 'response/@success'
                }, this.publishingRecord
            )
        });

        requestStore.on({
            callback: function(records, success) {
                if (success) {
                    if (records.length) {

                    }
                }
            },
            scope: this
        });

        requestStore.load();
    },
    failure: function(response, o) {
        // exception handler
    },
    headers: {
        'Powered-By': 'Ext'
    },
    params: {
        // params here
    },
    scope: this
});