Fix some memory leakage

Remove MediaCodec sPoll buffer leakage

Test:
DTV input source stress test pass

Bug: 279135364, 235185556
(cherry picked from https://android-review.googlesource.com/q/commit:dfd125dc25fef939f6232f8c6cb59a6a6ffa7733)
Merged-In: I751beaeba39eeabd2c6aa9059b51997130dbf86b
Change-Id: I751beaeba39eeabd2c6aa9059b51997130dbf86b
1 file changed