[SEAP] sch_pipe: minor refactoring, more checks
[SEAP] sch_pipe: minor refactoring, more checks

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