Attempt to fix memory leaks with the ChannelInjector

Addresses https://github.com/aadnk/ProtocolLib/issues/70

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

@@ -113,6 +113,7 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 	 * A flag set by the main thread to indiciate that a packet should not be processed.
 	 */
 	private final ThreadLocal<Boolean> scheduleProcessPackets = new ThreadLocal<Boolean>() {
+		@Override
 		protected Boolean initialValue() {
 			return true;
 		};
@@ -667,6 +668,7 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 	 * Set the player instance.
 	 * @param player - current instance.
 	 */
+	@Override
 	public void setPlayer(Player player) {
 		this.player = player;
 	}
@@ -675,6 +677,7 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 	 * Set the updated player instance.
 	 * @param updated - updated instance.
 	 */
+	@Override
 	public void setUpdatedPlayer(Player updated) {
 		this.updated = updated;
 	}
@@ -734,6 +737,10 @@ class ChannelInjector extends ByteToMessageDecoder implements Injector {
 				// Clear cache
 				factory.invalidate(player);
 			}
+
+			// dmulloy2 - attempt to fix memory leakage
+			this.player = null;
+			this.updated = null;
 		}
 	}