Fix rename replication log messages

Change-Id: I7aa23b51d85f31ca98c1fdf62c35e09e4760734f

src/main/java/com/googlesource/gerrit/plugins/renameproject/RenameProject.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/renameproject/RenameProject.java b/src/main/java/com/googlesource/gerrit/plugins/renameproject/RenameProject.java
index b03fe57..f7baea3 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/renameproject/RenameProject.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/renameproject/RenameProject.java
@@ -412,7 +412,7 @@
     Set<String> urls = cfg.getUrls();
     int nbRetries = cfg.getRenameReplicationRetries();
 
-    for (int i = 0; i < nbRetries && urls.size() > 0; ++i) {
+    for (int i = 0; i < nbRetries && !urls.isEmpty(); ++i) {
       urls = tryRenameReplication(urls, input, oldProjectKey);
     }
     for (String url : urls) {
@@ -421,7 +421,7 @@
           oldProjectKey.get(),
           input.name,
           url,
-          cfg.getUrls());
+          nbRetries);
     }
   }
 
@@ -471,8 +471,8 @@
         log.info(
             "Rescheduling a rename replication for retry for {} on project {}",
             url,
-            oldProjectKey.get());
-        e.printStackTrace();
+            oldProjectKey.get(),
+            e);
         failedReplicas.add(url);
       }
     }