GenericSource: reset mDecryptHandle when mDataSource is cleared. am: 09c291c838 am: 313358c747 am: 92b6cd8da9 am: 7b5564e251
am: 000321c7ee

* commit '000321c7ee8c2a0e489d41b9a5f8bad93bdd89b2':
  GenericSource: reset mDecryptHandle when mDataSource is cleared.