Reformat Comment to HumanComment

This is part of a larger change I45924cb3f8 that renamed Comment to
HumanComment.

Change-Id: I21f3119b1e57d12ac0289c672ab2d7910e36cccb

src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java

diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
index 4a0cad7..cdc7bb6 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/ChangeCheckerImpl.java
@@ -17,7 +17,7 @@
 import com.ericsson.gerrit.plugins.highavailability.forwarder.IndexEvent;
 import com.google.common.flogger.FluentLogger;
 import com.google.gerrit.entities.Change;
-import com.google.gerrit.entities.Comment;
+import com.google.gerrit.entities.HumanComment;
 import com.google.gerrit.server.CommentsUtil;
 import com.google.gerrit.server.change.ChangeFinder;
 import com.google.gerrit.server.git.GitRepositoryManager;
@@ -144,7 +144,7 @@
   private long getTsFromChangeAndDraftComments(ChangeNotes notes) {
     Change change = notes.getChange();
     Timestamp changeTs = change.getLastUpdatedOn();
-    for (Comment comment : commentsUtil.draftByChange(changeNotes.get())) {
+    for (HumanComment comment : commentsUtil.draftByChange(changeNotes.get())) {
       Timestamp commentTs = comment.writtenOn;
       changeTs = commentTs.after(changeTs) ? commentTs : changeTs;
     }