evs.c, clm.c, amf.c:
Fix missing unlock in error conditions reported by Kristen Smith

BKrev: 41deef37lfq4PXPbgolOpenG8xUJYg


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@397 fd59a12c-fef9-0310-b244-a6a79926bd2f