From d1c933de9b89ebda7e58a6c6d717f8af7ef8cd0c Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Fri, 13 Dec 2013 15:21:02 +1100
Subject: [PATCH] Prevent Mineshaft Saving


diff --git a/src/main/java/net/minecraft/server/StructureGenerator.java b/src/main/java/net/minecraft/server/StructureGenerator.java
index 4a4d2af..22d96e9 100644
--- a/src/main/java/net/minecraft/server/StructureGenerator.java
+++ b/src/main/java/net/minecraft/server/StructureGenerator.java
@@ -198,7 +198,7 @@ public abstract class StructureGenerator extends WorldGenBase {
     protected void a(World world) {
         if (this.a == null) {
             // Spigot Start
-            if (world.spigotConfig.saveStructureInfo) {
+            if (world.spigotConfig.saveStructureInfo && !this.a().equals( "Mineshaft" )) {
                 this.a = (PersistentStructure) world.a(PersistentStructure.class, this.a());
             } else {
                 this.a = new PersistentStructure(this.a());
-- 
2.5.0