countDown the latch if no need to delete percolator, introduced when added delete to percolated queries when deleting an index

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/action/admin/indices/delete/TransportDeleteIndexAction.java

@@ -104,6 +104,8 @@ public class TransportDeleteIndexAction extends TransportMasterNodeOperationActi
  latch.countDown();
  }
  });
+ } else {
+ latch.countDown();
  }
  }