Always populate last known name into cache

In theory this should never be an issue but
somehow is?

Essentials/src/main/java/com/earth2me/essentials/userstorage/ModernUserMap.java

@@ -167,18 +167,13 @@ public User loadUncachedUser(final UUID uuid) {
             player = new OfflinePlayerStub(uuid, ess.getServer());
             user = new User(player, ess);
             ((OfflinePlayerStub) player).setName(user.getLastAccountName());
-            uuidCache.updateCache(uuid, null);
+            uuidCache.updateCache(uuid, user.getLastAccountName());
             return user;
         }
 
         return null;
     }
 
-    public void addCachedUser(final User user) {
-        userCache.put(user.getUUID(), user);
-        debugLogCache(user);
-    }
-
     @Override
     public Map<String, UUID> getNameCache() {
         return uuidCache.getNameCache();