Prevent Fire from loading chunks

Had my server die from this twice already as it can cause a chain reaction.

Spigot-Server-Patches/0092-Prevent-Fire-from-loading-chunks.patch

@@ -1,4 +1,4 @@
-From 936235464e3c34bcc31d059836bcf5f37b3e3f18 Mon Sep 17 00:00:00 2001
+From 6dc2a1dac812d060e40cac3d4230e69657431ce6 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Sun, 17 Apr 2016 17:27:09 -0400
 Subject: [PATCH] Prevent Fire from loading chunks
@@ -7,9 +7,18 @@ This causes the nether to spam unload/reload chunks, plus overall
 bad behavior.
 
 diff --git a/src/main/java/net/minecraft/server/BlockFire.java b/src/main/java/net/minecraft/server/BlockFire.java
-index 2909f78f87..0ece78d4dc 100644
+index 2909f78f8..d32857c87 100644
 --- a/src/main/java/net/minecraft/server/BlockFire.java
 +++ b/src/main/java/net/minecraft/server/BlockFire.java
+@@ -78,7 +78,7 @@ public class BlockFire extends Block {
+                 BlockStateBoolean blockstateboolean = (BlockStateBoolean) BlockFire.g.get(enumdirection);
+ 
+                 if (blockstateboolean != null) {
+-                    iblockdata1 = (IBlockData) iblockdata1.set(blockstateboolean, this.h(iblockaccess.getType(blockposition.shift(enumdirection))));
++                    iblockdata1 = (IBlockData) iblockdata1.set(blockstateboolean, this.h(iblockaccess.getTypeIfLoaded(blockposition.shift(enumdirection)))); // Paper - prevent chunk loads
+                 }
+             }
+ 
 @@ -163,6 +163,7 @@ public class BlockFire extends Block {
                                  }
  
@@ -37,6 +46,15 @@ index 2909f78f87..0ece78d4dc 100644
  
              // CraftBukkit start
              org.bukkit.block.Block theBlock = world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+@@ -251,7 +258,7 @@ public class BlockFire extends Block {
+         for (int j = 0; j < i; ++j) {
+             EnumDirection enumdirection = aenumdirection[j];
+ 
+-            if (this.h(iblockaccess.getType(blockposition.shift(enumdirection)))) {
++            if (this.h(iblockaccess.getTypeIfLoaded(blockposition.shift(enumdirection)))) { // Paper - prevent chunk loads
+                 return true;
+             }
+         }
 @@ -269,8 +276,12 @@ public class BlockFire extends Block {
  
              for (int k = 0; k < j; ++k) {
@@ -52,6 +70,15 @@ index 2909f78f87..0ece78d4dc 100644
                  i = Math.max(this.r(iblockdata), i);
              }
  
+@@ -279,7 +290,7 @@ public class BlockFire extends Block {
+     }
+ 
+     public boolean h(IBlockData iblockdata) {
+-        return this.r(iblockdata) > 0;
++        return iblockdata != null && this.r(iblockdata) > 0; // Paper - iblockdata can be nullable if chunk is unloaded now
+     }
+ 
+     @Override
 -- 
 2.25.1