Check_MK Werk 4027: BI Aggregations: fixed compilation problem with BI aggregations when using sites without hosts

ID: 4027 Title: BI Aggregations: fixed compilation problem with BI aggregations when using sites without hosts Component: BI Level: 1 Class: Bug Fix Version: 1.5.0i1 BI aggregations did not compile correctly for sites without hosts. Happens when there was an empty viewer site with several connected real sites.