Lucene: Fix deprecated IndexWriter.close() call

Change-Id: Id5296a32e6d3d6ef62e02b0492875528d06b5041
diff --git a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/SubIndex.java b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/SubIndex.java
index 4ee3bf4..688835a 100644
--- a/gerrit-lucene/src/main/java/com/google/gerrit/lucene/SubIndex.java
+++ b/gerrit-lucene/src/main/java/com/google/gerrit/lucene/SubIndex.java
@@ -159,7 +159,7 @@
     try {
       writer.getIndexWriter().commit();
       try {
-        writer.getIndexWriter().close(true);
+        writer.getIndexWriter().close();
       } catch (AlreadyClosedException e) {
         // Ignore.
       }