Follow upstream's renaming of method to get current user

In gerrit's

  85f0487714e005b478eee5b28efab22bf5b7a5e2

commit, the getCurrentUser accessor got renamed to getUser. We follow
this move to allow compilation against gerrit master.

Bug: Issue 3621
Change-Id: Iebec4cf5ecd1dedb1e37243e89550eeb6a9e6cfb
diff --git a/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/worker/UserEventWorker.java b/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/worker/UserEventWorker.java
index 3f63b79..2beee41 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/worker/UserEventWorker.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/rabbitmq/worker/UserEventWorker.java
@@ -82,7 +82,7 @@
             .setContext(new RequestContext() {
 
               @Override
-              public CurrentUser getCurrentUser() {
+              public CurrentUser getUser() {
                 return pluginUser;
               }