SPIGOT-1953: Don't copy NavigationListener Map on Iteration.

CraftBukkit-Patches/0150-Don-t-copy-NavigationListener-Map-on-Iteration.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: md_5 <git@md-5.net>
+Date: Fri, 18 Mar 2016 14:41:20 +1100
+Subject: [PATCH] Don't copy NavigationListener Map on Iteration.
+
+
+diff --git a/src/main/java/net/minecraft/server/NavigationListener.java b/src/main/java/net/minecraft/server/NavigationListener.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/NavigationListener.java
++++ b/src/main/java/net/minecraft/server/NavigationListener.java
+@@ -0,0 +0,0 @@ public class NavigationListener implements IWorldAccess {
+ 
+     public void a(World world, BlockPosition blockposition, IBlockData iblockdata, IBlockData iblockdata1, int i) {
+         if (this.a(world, blockposition, iblockdata, iblockdata1)) {
+-            NavigationAbstract[] anavigationabstract = (NavigationAbstract[]) this.b.keySet().toArray(new NavigationAbstract[0]);
+-            NavigationAbstract[] anavigationabstract1 = anavigationabstract;
+-            int j = anavigationabstract.length;
+-
+-            for (int k = 0; k < j; ++k) {
+-                NavigationAbstract navigationabstract = anavigationabstract1[k];
++            // Spigot start
++            // NavigationAbstract[] anavigationabstract = (NavigationAbstract[]) this.b.keySet().toArray(new NavigationAbstract[0]);
++            // NavigationAbstract[] anavigationabstract1 = anavigationabstract;
++            // int j = anavigationabstract.length;
++
++            for (NavigationAbstract navigationabstract : this.b.keySet()) {
++                // NavigationAbstract navigationabstract = anavigationabstract1[k];
++                // Spigot end
+ 
+                 if (navigationabstract != null && !navigationabstract.i()) {
+                     PathEntity pathentity = navigationabstract.k();
+--