Makefile, ckpt.c:
defect 627
Fix API crash when second parameter of saCkptCheckpointStatusGet is null

BKrev: 42b318bd2NjZ6GGEcjf0mUQr9yL1EA


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@673 fd59a12c-fef9-0310-b244-a6a79926bd2f