Remove async op catcher to its own class

By: md_5 <git@md-5.net>

CraftBukkit-Patches/0022-Entity-Tracking-Ranges.patch

@@ -1,4 +1,4 @@
-From 8b7fcf347ebe03ae3ed45d5335bff52a713c0022 Mon Sep 17 00:00:00 2001
+From 8d41e5457f9da0d496a143c12e550a9e542a7214 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Wed, 20 Feb 2013 11:58:47 -0500
 Subject: [PATCH] Entity Tracking Ranges
@@ -12,13 +12,13 @@ This has multiple benefits:
 4) Less client lag - Not trying to render distant item frames and paintings and entities will reduce entity count on the client, which is major for shop/town worlds which may use tons of item frames.
 
 diff --git a/src/main/java/net/minecraft/server/EntityTracker.java b/src/main/java/net/minecraft/server/EntityTracker.java
-index 97d0bbb..fc679ae 100644
+index 8f291c2..52a45da 100644
 --- a/src/main/java/net/minecraft/server/EntityTracker.java
 +++ b/src/main/java/net/minecraft/server/EntityTracker.java
 @@ -92,6 +92,7 @@ public class EntityTracker {
  
      public void addEntity(Entity entity, int i, int j, boolean flag) {
-         if (Thread.currentThread() != MinecraftServer.getServer().primaryThread) throw new IllegalStateException("Asynchronous entity track!"); // Spigot
+         org.spigotmc.AsyncCatcher.catchOp( "entity track"); // Spigot
 +        i = org.spigotmc.TrackingRange.getEntityTrackingRange(entity, i); // Spigot
          if (i > this.e) {
              i = this.e;