Fix an error involving async packets and logged off players

Fixes #65

ProtocolLib/src/main/java/com/comphenix/protocol/async/AsyncFilterManager.java

@@ -305,6 +305,7 @@ public class AsyncFilterManager implements AsynchronousManager {
 	
 	/**
 	 * Enqueue a packet for asynchronous processing.
+	 * 
 	 * @param syncPacket - synchronous packet event.
 	 * @param asyncMarker - the asynchronous marker to use.
 	 */
@@ -316,12 +317,17 @@ public class AsyncFilterManager implements AsynchronousManager {
 
 		asyncMarker.setQueuedSendingIndex(asyncMarker.getNewSendingIndex());
 
+		// The player is only be null when they're logged out,
+		// so this should be a pretty safe check
+		Player player = newEvent.getPlayer();
+		if (player != null) {
 			// Start the process
 			getSendingQueue(syncPacket).enqueue(newEvent);
 
 			// We know this is occuring on the main thread, so pass TRUE
 			getProcessingQueue(syncPacket).enqueue(newEvent, true);
 		}
+	}
 	
 	@Override
 	public Set<Integer> getSendingFilters() {

ProtocolLib/src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java

@@ -81,10 +81,10 @@ import com.comphenix.protocol.injector.player.PlayerInjectorBuilder;
 import com.comphenix.protocol.injector.spigot.SpigotPacketInjector;
 import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.utility.Util;
 import com.comphenix.protocol.utility.EnhancerFactory;
 import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.utility.MinecraftVersion;
+import com.comphenix.protocol.utility.Util;
 import com.google.common.base.Objects;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
@@ -1008,6 +1008,7 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 
 	/**
 	 * Register this protocol manager on Bukkit.
+	 * 
 	 * @param manager - Bukkit plugin manager that provides player join/leave events.
 	 * @param plugin - the parent plugin.
 	 */
@@ -1020,22 +1021,27 @@ public final class PacketFilterManager implements ProtocolManager, ListenerInvok
 
 		try {
 			manager.registerEvents(new Listener() {
+
 				@EventHandler(priority = EventPriority.LOWEST)
 				public void onPlayerLogin(PlayerLoginEvent event) {
 					PacketFilterManager.this.onPlayerLogin(event);
 				}
+
 				@EventHandler(priority = EventPriority.LOWEST)
 				public void onPrePlayerJoin(PlayerJoinEvent event) {
 					PacketFilterManager.this.onPrePlayerJoin(event);
 				}
+
 				@EventHandler(priority = EventPriority.MONITOR)
 				public void onPlayerJoin(PlayerJoinEvent event) {
 					PacketFilterManager.this.onPlayerJoin(event);
 				}
+
 				@EventHandler(priority = EventPriority.MONITOR)
 				public void onPlayerQuit(PlayerQuitEvent event) {
 					PacketFilterManager.this.onPlayerQuit(event);
 				}
+
 				@EventHandler(priority = EventPriority.MONITOR)
 				public void onPluginDisabled(PluginDisableEvent event) {
 					PacketFilterManager.this.onPluginDisabled(event, plugin);

ProtocolLib/src/main/java/com/comphenix/protocol/injector/netty/NettyProtocolInjector.java

@@ -253,6 +253,7 @@ public class NettyProtocolInjector implements ChannelListener {
 			PacketContainer container = new PacketContainer(PacketRegistry.getPacketType(clazz), packet);
 			return packetQueued(container, injector.getPlayer(), marker);
 		}
+
 		// Don't change anything
 		return null;
     }
@@ -265,6 +266,7 @@ public class NettyProtocolInjector implements ChannelListener {
 			PacketContainer container = new PacketContainer(PacketRegistry.getPacketType(clazz), packet);
 			return packetReceived(container, injector.getPlayer(), marker);
 		}
+
 		// Don't change anything
 		return null;
 	}
@@ -314,8 +316,8 @@ public class NettyProtocolInjector implements ChannelListener {
 			@Override
 			public void updatePlayer(Player player) {
 				injectionFactory.fromPlayer(player, listener).inject();
-			
 			}
+
 			@Override
 			public void injectPlayer(Player player, ConflictStrategy strategy) {
 				injectionFactory.fromPlayer(player, listener).inject();