fix CheckIndex -fix to immediately abort if no segments file is present
fix CheckIndex -fix to immediately abort if no segments file is present

git-svn-id: 4c5078813df38efa56971a28e09a55254294f104@778834 13f79535-47bb-0310-9956-ffa450edef68

tokee/lucene,tokee/lucene,tokee/lucene,tokee/lucene