Fix NPE in ScriptingData if FileWatcher was not initialized

[ccrvincent]

Saw this NPE during shutdown after a crash in a crashlog in a support forum.

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[rubensworks]

Thanks @ccrvincent!
Before I merge, could you point to the support forum?
Because I'd like to know a bit more on the context of the problem.

[ccrvincent]

It's a Discord, and all I got was the crash report so far. They were getting crashes when trying to connect to a server running a modpack with IntegratedScripting in it. Looks like the shutdown hook was confusing the logger with the NPE.

Description: Exception in server tick loop

java.lang.NullPointerException: Cannot invoke "java.nio.file.WatchService.close()" because "this.watchService" is null
	at TRANSFORMER/[email protected]/org.cyclops.integratedscripting.core.network.ScriptingData.close(ScriptingData.java:82) ~[IntegratedScripting-1.21-neoforge-1.0.5.jar%23544!/:1.0.5] {re:classloading}
	at TRANSFORMER/[email protected]/org.cyclops.integratedscripting.IntegratedScripting.onServerStopping(IntegratedScripting.java:117) ~[IntegratedScripting-1.21-neoforge-1.0.5.jar%23544!/:1.0.5] {re:classloading,pl:runtimedistcleaner:A}
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.ConsumerEventHandler.invoke(ConsumerEventHandler.java:26) ~[bus-8.0.2.jar%2367!/:?] {}
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:350) ~[bus-8.0.2.jar%2367!/:?] {}
	at MC-BOOTSTRAP/net.neoforged.bus/net.neoforged.bus.EventBus.post(EventBus.java:315) ~[bus-8.0.2.jar%2367!/:?] {}
	at TRANSFORMER/[email protected]/net.neoforged.neoforge.server.ServerLifecycleHooks.handleServerStopping(ServerLifecycleHooks.java:118) ~[neoforge-21.1.66-universal.jar%23409!/:?] {re:mixin,re:classloading,pl:mixin:APP:almostunified-neoforge.mixins.json:worldgen.ServerLifecycleHooksMixin from mod almostunified,pl:mixin:A}
	at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:724) ~[server-1.21.1-20240808.144430-srg.jar%23408!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
	at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:267) ~[server-1.21.1-20240808.144430-srg.jar%23408!/:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:A}
	at java.base/java.lang.Thread.run(Thread.java:1583) [?:?] {re:mixin}

[rubensworks]

I see, thanks for the info!