Fix up some bugs in my last commit.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1480599 13f79535-47bb-0310-9956-ffa450edef68
Fixes APLO-320: Occasionally on restart 'Invalid log position:' warning messages get logged

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1480600 13f79535-47bb-0310-9956-ffa450edef68
Remove unused query param.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1480601 13f79535-47bb-0310-9956-ffa450edef68