Close stream at end of OpenAnOpenedStreamsTest

The following test CloseStreamBeforeOpenTest assumes that there are no
open streams.

Bug: 174686912
Test: atest VtsHalTvInputV1_0TargetTest
      against mock binderized TV input HAL
Change-Id: I589fdee5e5181f2aa32977cb2594ec61410fb7b1
1 file changed