fuzzing fixes: fail on missing ref frames & consistently return negative values as error from dav1d_decode_frame (!162) · Merge requests · VideoLAN / dav1d

Fixes segfaults with david-fuzzing-data:artifacts/crash-b9015ad03b63131c25016592c3535da1268a08ad.

Edited Oct 10, 2018 by Janne Grunau

fuzzing fixes: fail on missing ref frames & consistently return negative values as error from dav1d_decode_frame