Exception in thread shutdown-hook-1 java.util.ConcurrentModificationException: null

[sarxos]

Exception is being printed only in case when webcam is disposed on JVM graceful shutdown hook.

12:07:12.788 [shutdown-hook-1] ERROR c.g.s.webcam.WebcamExceptionHandler - Exception in thread shutdown-hook-1
java.util.ConcurrentModificationException: null
    at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372) ~[na:1.6.0_45]
    at java.util.AbstractList$Itr.next(AbstractList.java:343) ~[na:1.6.0_45]
    at com.github.sarxos.webcam.Webcam.dispose(Webcam.java:328) ~[classes/:na]
    at com.github.sarxos.webcam.WebcamShutdownHook.run(WebcamShutdownHook.java:44) ~[classes/:na]

The exception side effect is a possibility that webcam is not disposed after JVM process is down.