Paper/patches/server/0034-Only-refresh-abilities-if-needed.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Tue, 1 Mar 2016 23:12:03 -0600
Subject: [PATCH] Only refresh abilities if needed


diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 213024c868e7e33cd1ecef4173449b02f5b9b425..00df00676337435e6ec62a86dc03fecde30f9819 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -1678,12 +1678,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public void setFlying(boolean value) {
+        boolean needsUpdate = getHandle().getAbilities().flying != value; // Paper - Only refresh abilities if needed
         if (!this.getAllowFlight() && value) {
             throw new IllegalArgumentException("Cannot make player fly if getAllowFlight() is false");
         }
 
         this.getHandle().getAbilities().flying = value;
-        this.getHandle().onUpdateAbilities();
+        if (needsUpdate) this.getHandle().onUpdateAbilities(); // Paper - Only refresh abilities if needed
     }
 
     @Override