Fix compilation

Author: jasontedor

core/src/main/java/org/elasticsearch/index/engine/InternalEngine.java

@@ -1709,7 +1709,7 @@ private long commitIndexWriter(final IndexWriter writer, final Translog translog
                  * of invocation of the commit data iterator (which occurs after all documents have been flushed to Lucene).
                  */
                 final Map<String, String> commitData = new HashMap<>(5);
-                commitData.put(Translog.TRANSLOG_GENERATION_KEY, translogFileGeneration));
+                commitData.put(Translog.TRANSLOG_GENERATION_KEY, translogFileGeneration);
                 commitData.put(Translog.TRANSLOG_UUID_KEY, translogUUID);
                 commitData.put(SequenceNumbers.LOCAL_CHECKPOINT_KEY, localCheckpointValue);
                 if (syncId != null) {