Ticket #471 logconv.pl tool removes the access logs contents if "-M" is not correctly used
https://fedorahosted.org/389/ticket/471
Reviewed by: nhosoi (Thanks!)
Branch: master
Fix Description: Do not call new_stats_block() until we verify that it is safe
to call it. It will wipe out the file.
Platforms tested: RHEL6 x86_64
Flag Day: no
Doc impact: no