Fix getDisplayName getting lost when getBukkitEntity is called

src/main/java/net/minecraft/server/EntityPlayer.java

@@ -50,8 +50,14 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
         this.name = s;
         this.c = iteminworldmanager;
         this.height = 0.0F;
+
+        // CraftBukkit start
+        this.displayName = this.name;
     }
 
+    public String displayName;
+    // CraftBukkit end
+
     public void l() {
         this.activeContainer.a((ICrafting) this);
     }