Error when injecting protocol on Bungee if connection is canceled

[diogotcorreia]

Describe the bug

If the client connection is cancelled (e.g. maintenance) the package injector fails.

How can the bug be reproduced?

No response

Expected behaviour

No response

Which Spigot fork are you using?

Vanilla Spigot (from BuildTools)

What's your server version?

irrelevant

Which proxy are you using?

BungeeCord

What's your proxy version?

irrelevant

What's the MC version of your client?

irrelevant

What's the Triton version you're using?

irrelevant

Additional Information

[13:41:36 ERROR] [Triton]: [PacketInjector] Failed to inject client connection for f6c4f5ae-267c-4a53-9e6c-ae00583fd325
[13:41:36 ERROR]: java.lang.NullPointerException: Cannot invoke "Object.getClass()" because "<parameter1>" is null
[13:41:36 ERROR]:       at com.rexcantor64.triton.utils.NMSUtils.getDeclaredField(NMSUtils.java:64)
[13:41:36 ERROR]:       at com.rexcantor64.triton.utils.NMSUtils.getDeclaredField(NMSUtils.java:60)
[13:41:36 ERROR]:       at com.rexcantor64.triton.BungeeMLP.injectPipeline(BungeeMLP.java:124)
[13:41:36 ERROR]:       at com.rexcantor64.triton.listeners.BungeeListener.lambda$onLogin$0(BungeeListener.java:49)
[13:41:36 ERROR]:       at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:66)
[13:41:36 ERROR]:       at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[13:41:36 ERROR]:       at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[13:41:36 ERROR]:       at java.base/java.lang.Thread.run(Thread.java:833)

[diogotcorreia]

I was not able to reproduce the issue, but I'll handle this gracefully from now on.