Prevent overflow and out-of-bounds access

Bug: 177617358
Test: atest CtsMediaTestCases:MediaExtractorTest
Test: atest CtsMediaTestCases:MediaPlayerTest
Change-Id: I18b7461aae1ea61348670bc8f71a5a4995c92e67
Merged-In: I18b7461aae1ea61348670bc8f71a5a4995c92e67
1 file changed