CodeOwnersOnPostReview: Fix variable name

In Java variables should not start with an upper case letter.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I3d758d7c478034a30db3fc8cbe557a88c3e2ebd3
diff --git a/java/com/google/gerrit/plugins/codeowners/backend/CodeOwnersOnPostReview.java b/java/com/google/gerrit/plugins/codeowners/backend/CodeOwnersOnPostReview.java
index 0eb05f2..403b2f8 100644
--- a/java/com/google/gerrit/plugins/codeowners/backend/CodeOwnersOnPostReview.java
+++ b/java/com/google/gerrit/plugins/codeowners/backend/CodeOwnersOnPostReview.java
@@ -245,7 +245,7 @@
                           fileCodeOwnerStatus.newPathStatus(), fileCodeOwnerStatus.oldPathStatus())
                       .filter(Optional::isPresent)
                       .map(Optional::get))
-          .filter(PathCodeOwnerStatus -> PathCodeOwnerStatus.status() == CodeOwnerStatus.APPROVED)
+          .filter(pathCodeOwnerStatus -> pathCodeOwnerStatus.status() == CodeOwnerStatus.APPROVED)
           .map(PathCodeOwnerStatus::path)
           .sorted(comparing(Path::toString))
           .collect(toImmutableList());