Use PatchSetUtil to read patch sets

Previously we were reading directly from ReviewDb, which produced empty
results in NoteDb.

Change-Id: I3ef2ab6667e74351c50429ef6d85b232474073db
Signed-off-by: Edwin Kempin <ekempin@google.com>

src/main/java/com/googlesource/gerrit/plugins/reviewnotes/CreateReviewNotes.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/reviewnotes/CreateReviewNotes.java b/src/main/java/com/googlesource/gerrit/plugins/reviewnotes/CreateReviewNotes.java
index 278a299..7237268 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/reviewnotes/CreateReviewNotes.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/reviewnotes/CreateReviewNotes.java
@@ -26,6 +26,7 @@
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.ApprovalsUtil;
 import com.google.gerrit.server.GerritPersonIdent;
+import com.google.gerrit.server.PatchSetUtil;
 import com.google.gerrit.server.account.AccountCache;
 import com.google.gerrit.server.account.AccountState;
 import com.google.gerrit.server.config.AnonymousCowardName;
@@ -77,6 +78,7 @@
   private final Provider<InternalChangeQuery> queryProvider;
   private final DynamicItem<UrlFormatter> urlFormatter;
   private final ReviewDb reviewDb;
+  private final PatchSetUtil psUtil;
   private final Project.NameKey project;
   private final Repository git;
 
@@ -95,6 +97,7 @@
       NotesBranchUtil.Factory notesBranchUtilFactory,
       Provider<InternalChangeQuery> queryProvider,
       DynamicItem<UrlFormatter> urlFormatter,
+      PatchSetUtil psUtil,
       @Assisted ReviewDb reviewDb,
       @Assisted Project.NameKey project,
       @Assisted Repository git) {
@@ -116,6 +119,7 @@
     this.notesBranchUtilFactory = notesBranchUtilFactory;
     this.queryProvider = queryProvider;
     this.urlFormatter = urlFormatter;
+    this.psUtil = psUtil;
     this.reviewDb = reviewDb;
     this.project = project;
     this.git = git;
@@ -173,7 +177,7 @@
 
       for (ChangeNotes cn : notes) {
         monitor.update(1);
-        PatchSet ps = reviewDb.patchSets().get(cn.getChange().currentPatchSetId());
+        PatchSet ps = psUtil.current(cn);
         ObjectId commitId = ObjectId.fromString(ps.getRevision().get());
         RevCommit commit = rw.parseCommit(commitId);
         getNotes().set(commitId, createNoteContent(cn, ps));