Handling empty objects in cell data

I am using a webservice that returns JSON data, so I have no control over how it returns this data. However, in some cases, the cells returned contain empty objects (i.e. { } ) instead "null". In this case, DataTables displays "[object Object]" in the cell which is unsightly and misleading to the end users.
I am wondering if there is a fix for this already. If not, I found a way to fix it by adding these lines to the function_fnGetCellData() as follows:

if ((sData != null) && (typeof sData === 'object')) {
    if (jQuery.isEmptyObject(sData)) {
        return  ((oCol.sDefaultContent)?oCol.sDefaultContent:'');
    }
}

thoughts?