Fixes: Timeout
Fixes: 69216/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RV30_fuzzer-5808725188214784
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Paul B Mahol <onemda@gmail.com>