Closes #1283: Add custom Callable to prevent memory leaks

src/main/java/appeng/me/GridNode.java

@@ -25,7 +25,6 @@ import java.util.Deque;
 import java.util.EnumSet;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.concurrent.Callable;
 
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
@@ -52,6 +51,7 @@ import appeng.api.util.IReadOnlyCollection;
 import appeng.core.worlddata.WorldData;
 import appeng.hooks.TickHandler;
 import appeng.me.pathfinding.IPathItem;
+import appeng.util.IWorldCallable;
 import appeng.util.ReadOnlyCollection;
 
 
@@ -669,7 +669,7 @@ public class GridNode implements IGridNode, IPathItem
 		return this.lastUsedChannels;
 	}
 
-	private static class MachineSecurityBreak implements Callable<Void>
+	private static class MachineSecurityBreak implements IWorldCallable<Void>
 	{
 		private final GridNode node;
 
@@ -679,7 +679,7 @@ public class GridNode implements IGridNode, IPathItem
 		}
 
 		@Override
-		public Void call() throws Exception
+		public Void call(World world) throws Exception
 		{
 			this.node.getMachine().securityBreak();
 

src/main/java/appeng/me/cache/helpers/Connections.java

@@ -20,13 +20,15 @@ package appeng.me.cache.helpers;
 
 
 import java.util.HashMap;
-import java.util.concurrent.Callable;
+
+import net.minecraft.world.World;
 
 import appeng.api.networking.IGridNode;
 import appeng.parts.p2p.PartP2PTunnelME;
+import appeng.util.IWorldCallable;
 
 
-public class Connections implements Callable
+public class Connections implements IWorldCallable<Void>
 {
 
 	public final HashMap<IGridNode, TunnelConnection> connections = new HashMap<IGridNode, TunnelConnection>();
@@ -40,7 +42,7 @@ public class Connections implements Callable
 	}
 
 	@Override
-	public Object call() throws Exception
+	public Void call( World world ) throws Exception
 	{
 		this.me.updateConnections( this );