Crash in correct_timeouts() when USB camera disconnected

[JungSe0ng]

Environment:

• Android API Level: 34
• Unity Version: 2022.3.62f1
• Device: Metaquest2

Stack trace:
serenegiant::usb::Context::correct_timeouts()
serenegiant::usb::Device::lock()
pthread_mutex_lock (HandleUsingDestroyedMutex)

Reproduction:

1. Connect USB camera
2. Start UVC
3. Physically disconnect camera
4. App crashes after few seconds