main.c:
Fix defect 456
when checkpoint expirse, the executive crashes if no bind address was specified

BKrev: 425aed2d6P3dBt_7UO1Cv6d5kt4haQ


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@587 fd59a12c-fef9-0310-b244-a6a79926bd2f