Fixed buffer size for readlink() and added an explaining comment.
Fixed buffer size for readlink() and added an explaining comment.

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