This recommended update for lsof fixes the following issues:

- update lsof_4.80_nfs.patch and add a check for HasNFS
variable as HasNFS may already have been set to 2 in the
readmnt() function [boo#995061]

- modify lsof_4.80_nfs.patch to prevent 'lsof -b' from hanging
when NFS server is unavailable [boo#995061]