The UIMA core code fails to unlock a CAS if there is an exception in CasMultiplier's next() or hasNext() methods

If there is an exception in user's Cas Multiplier hasNext() or next() method, the framework does not unlock the input CAS. If an application attempts to reset a CAS that failed in above methods, the following is produced: CASAdminException: Can't flush CAS, flushing is disabled.
Modify AnalysisComponentCasIterator (an inner class of PrimitiveAnalysisEngine_impl) to call

((CASImpl)mInputCas).restoreClassLoaderUnlockCas();

in both hasNext() and next() while handling an exception thrown from user's code.