Optimize call to getFluid for explosions (#2859)

Signed-off-by: BrodyBeckwith <brody@beckwith.dev>

Spigot-Server-Patches/0424-Optimize-call-to-getFluid-for-explosions.patch

@@ -0,0 +1,22 @@
+From f0b4cbaaa6aec911755c4211356befd1577d3a8a Mon Sep 17 00:00:00 2001
+From: BrodyBeckwith <brody@beckwith.dev>
+Date: Tue, 14 Jan 2020 17:49:03 -0500
+Subject: [PATCH] Optimize call to getFluid for explosions
+
+
+diff --git a/src/main/java/net/minecraft/server/Explosion.java b/src/main/java/net/minecraft/server/Explosion.java
+index 8762a566..3fd4c12b 100644
+--- a/src/main/java/net/minecraft/server/Explosion.java
++++ b/src/main/java/net/minecraft/server/Explosion.java
+@@ -117,7 +117,7 @@ public class Explosion {
+                         for (float f1 = 0.3F; f > 0.0F; f -= 0.22500001F) {
+                             BlockPosition blockposition = new BlockPosition(d4, d5, d6);
+                             IBlockData iblockdata = this.world.getType(blockposition);
+-                            Fluid fluid = this.world.getFluid(blockposition);
++                            Fluid fluid = iblockdata.getFluid(); // Paper
+ 
+                             if (!iblockdata.isAir() || !fluid.isEmpty()) {
+                                 float f2 = Math.max(iblockdata.getBlock().getDurability(), fluid.k());
+-- 
+2.20.1.windows.1
+