Backport a bug fix from the pre-release

A mistake in the buffer size calculation caused the buffer for chunk
packets to be around 16 times the size they should have been.

nms-patches/DataPaletteBlock.patch

@@ -23,3 +23,11 @@
          }
  
      }
+@@ -117,6 +131,6 @@
+     public int a() {
+         int i = this.b.b();
+ 
+-        return 1 + this.c.a() + PacketDataSerializer.a(i) + i * 8;
++        return 1 + this.c.a() + PacketDataSerializer.a(i) + this.b.a().length * 8; // CraftBukkit - Backport fix, remove on update
+     }
+ }