Add unit test for uninitialized read fix

Bug: 173720767
Test: atest IMediaPlayerTest
Change-Id: Ia3cbc0626d38ffec7a37760b984d521eb9c9874e
Merged-In: Ia3cbc0626d38ffec7a37760b984d521eb9c9874e
(cherry picked from commit f8905e67d4373a6765911604eb306ca212a68ca8)
4 files changed