Prevent read of uninitialized memory

Bug: 173720767
Test: atest MediaPlayerTest
Change-Id: Ib6a3d24e07915e8af9d019e54d0501b74aa4671d
(cherry picked from commit 42a97f5648e9345461422310039fc9d1def0a91a)
(cherry picked from commit e4497aaaabb2ceadec970882c82ee199b7ac6592)
1 file changed