OpusHeader: Fix integer overflow in GetOpusHeaderBuffers

unified CSD parsing now checks for valid size of CSD

Bug: 142861738
Test: poc in bug
Test: atest android.media.cts.DecoderTest
Change-Id: Iff742d2fdf4139bab7b5f378c1742ef52c0bbc78
Merged-In: Iff742d2fdf4139bab7b5f378c1742ef52c0bbc78
1 file changed