child_department in category->scopes doesn't work

From scope aggregator 4.8 release, child_department in category->scopes doesn't work.
How to reproduce:
Install news-china and sinanews, check all the departments, sinanews returns same items.
Root Cause,
utils.cpp-->load_declarations line 278 to line 294
if (agg_scope_->lang().size() == 2 && child_dept.contains(QStringLiteral("LANGCODE")))
{
    child_dept = child_dept.replace(QStringLiteral("LANGCODE"), qstr(agg_scope_->lang()));
    scopeLocalId_childDept_m[local_id] = child_dept.toStdString();
}

should be
if (agg_scope_->lang().size() == 2)
{
    if (child_dept.contains(QStringLiteral("LANGCODE")))
    {
        child_dept = child_dept.replace(QStringLiteral("LANGCODE"), qstr(agg_scope_->lang()));
    }
    scopeLocalId_childDept_m[local_id] = child_dept.toStdString();
}