add TODO: timeout

Author: Vladimir Kotal

opengrok-indexer/src/main/java/org/opengrok/indexer/history/GitRepository.java

@@ -624,6 +624,7 @@ boolean hasFileBasedTags() {
     protected void buildTagList(File directory, CommandTimeoutType cmdType) {
         this.tagList = new TreeSet<>();
 
+        // TODO: add timeout
         try (org.eclipse.jgit.lib.Repository repository = FileRepositoryBuilder.
                 create(Paths.get(directory.getAbsolutePath(), ".git").toFile())) {
             try (Git git = new Git(repository)) {