vpxdec: handle non-display frames

Bug: 143115066
Bug: 144427423
Test: bug repro steps
Merged-In: I4c581b229b83a555d6214075f0e5367d17461cc9
Change-Id: I4c581b229b83a555d6214075f0e5367d17461cc9
(cherry picked from commit ddd7a80f5bb936f1d4c26f1dcc5e7b4564a26c9e)
2 files changed