Reset players remainingAir on respawn (#1598)

As mentioned in #1597, your air level did not reset if you drown.

Now you get a full breath during respawn.

Spigot-Server-Patches/0402-Reset-players-airTicks-on-respawn.patch

@@ -0,0 +1,34 @@
+From 3cbba85fb406eed003f0ce5a1b733ae350d50a3a Mon Sep 17 00:00:00 2001
+From: GreenMeanie <GreenMeanieMC@gmail.com>
+Date: Sat, 20 Oct 2018 22:34:02 -0400
+Subject: [PATCH] Reset players airTicks on respawn
+
+
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index 22fce6c36..9d1c53897 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -2334,7 +2334,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
+ 
+     }
+ 
+-    public int bf() {
++    public int getMaxAirTicks() { return bf(); } public int bf() { // Paper - OBF HELPER
+         return 300;
+     }
+ 
+diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
+index 4ca5cfe9a..91d9b62e9 100644
+--- a/src/main/java/net/minecraft/server/EntityPlayer.java
++++ b/src/main/java/net/minecraft/server/EntityPlayer.java
+@@ -1614,6 +1614,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
+         }
+ 
+         this.setHealth(this.getMaxHealth());
++        this.setAirTicks(this.getMaxAirTicks()); // Paper
+         this.fireTicks = 0;
+         this.fallDistance = 0;
+         this.foodData = new FoodMetaData(this);
+-- 
+2.19.1
+