From 5c861fe864ac46eeffc8580814638c0590316233 Mon Sep 17 00:00:00 2001
From: Wesley Wolfe <weswolf@aol.com>
Date: Mon, 2 Sep 2013 16:51:14 -0500
Subject: [PATCH] Fix improperly initialized usernames

---
 src/main/java/net/minecraft/server/PendingConnection.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/net/minecraft/server/PendingConnection.java b/src/main/java/net/minecraft/server/PendingConnection.java
index c9e187e661..17490596e8 100644
--- a/src/main/java/net/minecraft/server/PendingConnection.java
+++ b/src/main/java/net/minecraft/server/PendingConnection.java
@@ -63,6 +63,9 @@ public class PendingConnection extends Connection {
 
     public void a(Packet2Handshake packet2handshake) {
         // CraftBukkit start
+        if (this.g != null) {
+            this.disconnect("Invalid username " + this.g);
+        }
         this.hostname = packet2handshake.c == null ? "" : packet2handshake.c + ':' + packet2handshake.d;
         // CraftBukkit end
         this.g = packet2handshake.f();