xccdf: resolve compiler warning
xccdf: resolve compiler warning

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