avcodec/h264_parse: Clear invalid chroma weights in ff_h264_pred_weight_table()
Fixes: 6037/clusterfuzz-testcase-minimized-
5030249784934400
Fixes: signed integer overflow: 256 *
16992036 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit
85c85fffff3f9c75301db3eba1bd5f2fb1e6285d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>