[xccdf_policy] more informative err message
[xccdf_policy] more informative err message

isimluk/openscap,redhatrises/openscap,redhatrises/openscap,openprivacy/openscap,jan-cerny/openscap,ybznek/openscap,isimluk/openscap,jan-cerny/openscap,Hexadorsimal/openscap,jan-cerny/openscap,openprivacy/openscap,Hexadorsimal/openscap,OpenSCAP/openscap,redhatrises/openscap,jan-cerny/openscap,mpreisler/openscap,jan-cerny/openscap,mpreisler/openscap,ybznek/openscap,mpreisler/openscap,ybznek/openscap,OpenSCAP/openscap,ybznek/openscap,ybznek/openscap,openprivacy/openscap,postfix/openscap,postfix/openscap,Hexadorsimal/openscap,redhatrises/openscap,ybznek/openscap,redhatrises/openscap,postfix/openscap,mpreisler/openscap,postfix/openscap,OpenSCAP/openscap,Hexadorsimal/openscap,postfix/openscap,Hexadorsimal/openscap,isimluk/openscap,postfix/openscap,jan-cerny/openscap,mpreisler/openscap,isimluk/openscap,OpenSCAP/openscap,isimluk/openscap,openprivacy/openscap,openprivacy/openscap,OpenSCAP/openscap,openprivacy/openscap,redhatrises/openscap,mpreisler/openscap,Hexadorsimal/openscap,isimluk/openscap,OpenSCAP/openscap