Cannot shutdown Fuse from Karaf console

Issue

• Fuse cannot be shutdown from Karaf Console. The exception is thrown after issuing a shutdown command.

java.lang.NullPointerException
        at org.apache.maven.index.context.DefaultIndexingContext.acquireIndexSearcher(DefaultIndexingContext.java:498)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.context.DefaultIndexingContext.merge(DefaultIndexingContext.java:589)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.context.DefaultIndexingContext.merge(DefaultIndexingContext.java:583)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.updater.DefaultIndexUpdater.loadIndexDirectory(DefaultIndexUpdater.java:214)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.updater.DefaultIndexUpdater.access$300(DefaultIndexUpdater.java:76)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.updater.DefaultIndexUpdater$LuceneIndexAdaptor.addIndexChunk(DefaultIndexUpdater.java:636)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:829)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at org.apache.maven.index.updater.DefaultIndexUpdater.fetchAndUpdateIndex(DefaultIndexUpdater.java:157)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at io.hawt.maven.indexer.MavenIndexerFacade.downloadOrUpdateIndices(MavenIndexerFacade.java:171)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at io.hawt.maven.indexer.MavenIndexerFacade.init(MavenIndexerFacade.java:129)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at io.hawt.maven.indexer.AsyncMavenIndexerFacadeFactory.createMavenIndexer(AsyncMavenIndexerFacadeFactory.java:134)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at io.hawt.maven.indexer.AsyncMavenIndexerFacadeFactory$1.run(AsyncMavenIndexerFacadeFactory.java:49)[250:io.hawt.hawtio-maven-indexer:1.2.0.redhat-379]
        at java.util.TimerThread.mainLoop(Timer.java:555)[:1.7.0_76]
        at java.util.TimerThread.run(Timer.java:505)[:1.7.0_76]