Ticket #48224 - redux 2 - logconv.pl should handle *.tar.xz, *.txz, *.xz log files
https://fedorahosted.org/389/ticket/48224
Reviewed by: nhosoi (Thanks!)
Branch: master
Fix Description: Use $? instead of $! to get pipe errors.
Platforms tested: Fedora 21, RHEL 7.2 candidate
Flag Day: no
Doc impact: no