SPIGOT-5895: PlayerChangedWorldEvent#getFrom is incorrect

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

paper-server/nms-patches/EntityPlayer.patch

@@ -540,7 +540,7 @@
              this.lastFoodSent = -1;
 +
 +            // CraftBukkit start
-+            PlayerChangedWorldEvent changeEvent = new PlayerChangedWorldEvent(this.getBukkitEntity(), worldserver.getWorld());
++            PlayerChangedWorldEvent changeEvent = new PlayerChangedWorldEvent(this.getBukkitEntity(), worldserver1.getWorld());
 +            this.world.getServer().getPluginManager().callEvent(changeEvent);
 +            // CraftBukkit end
              return this;