Update notes for submitted changes

* Use isEmpty() instead of size()==0 where possible

6a/4c77e619d79c885aa6f08f2a1d8d8c1a936bcb

@@ -0,0 +1,7 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Sat, 13 Apr 2019 13:55:13 -0400
+Reviewed-on: https://git.eclipse.org/r/140158
+Project: jgit/jgit
+Branch: refs/heads/master