avcodec/webp: Add missing input padding

Fixes: 1536/clusterfuzz-testcase-minimized-5973925404082176

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-13 18:27:27 +02:00
parent 26227d9186
commit a3508cc3fe