Fixes an assertion failure.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1440434 13f79535-47bb-0310-9956-ffa450edef68
Do an index repair if the index file fails to initially open.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1440435 13f79535-47bb-0310-9956-ffa450edef68