Fix Light Bugs - Fixes #1542

Applied a "Only run this when the blocks are different" to
a place, that apparently must be called even with the same
block but different other data I guess.

This was causing oddness with light data.

Spigot-Server-Patches/0378-Optimize-Light-Recalculations.patch

@@ -1,4 +1,4 @@
-From 39fd972d4e2eb1a6ae58e4a8ca9203978ec102ec Mon Sep 17 00:00:00 2001
+From eca91170fffd8d7b1874f9e649323e3ab457b4a3 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Fri, 28 Sep 2018 20:46:29 -0400
 Subject: [PATCH] Optimize Light Recalculations
@@ -36,18 +36,9 @@ index cb99888707..027f98633e 100644
                      int i1 = iblockdata.b(this.world, blockposition);
                      int j1 = iblockdata1.b(this.world, blockposition);
 diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
-index bbcedb8fc7..a19e941174 100644
+index bbcedb8fc7..540d237ceb 100644
 --- a/src/main/java/net/minecraft/server/World.java
 +++ b/src/main/java/net/minecraft/server/World.java
-@@ -445,7 +445,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
-             } else {
-                 IBlockData iblockdata2 = this.getType(blockposition);
- 
--                if (iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) {
-+                if (iblockdata.getBlock() != iblockdata2.getBlock() && iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) { // Paper - optimize light recalculations
-                     this.methodProfiler.a("checkLight");
-                     chunk.runOrQueueLightUpdate(() -> this.r(blockposition)); // Paper - Queue light update
-                     this.methodProfiler.e();
 @@ -589,8 +589,9 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
          }
  
@@ -73,5 +64,5 @@ index bbcedb8fc7..a19e941174 100644
              // CraftBukkit end
              return false;
 -- 
-2.19.0
+2.19.1