Update to Minecraft 1.12-pre2

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

paper-server/nms-patches/TileEntityFurnace.patch

@@ -52,7 +52,7 @@
 @@ -119,11 +154,29 @@
      }
  
-     public void F_() {
+     public void e() {
 -        boolean flag = this.isBurning();
 +        boolean flag = (this.getBlock() == Blocks.LIT_FURNACE); // CraftBukkit - SPIGOT-844 - Check if furnace block is lit using the block instead of burn time
          boolean flag1 = false;