Fixes: Timeout
Fixes: 
8665/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_CSCD_fuzzer-5768442610188288

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
---
 libavcodec/cscd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c
index 35c4ee08c3..5eb511a565 100644
--- a/libavcodec/cscd.c
+++ b/libavcodec/cscd.c
@@ -81,7 +81,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, 
int *got_frame,
     switch ((buf[0] >> 1) & 7) {
         case 0: { // lzo compression
             int outlen = c->decomp_size, inlen = buf_size - 2;
-            if (av_lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen)) {
+            if (av_lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen) || 
outlen) {
                 av_log(avctx, AV_LOG_ERROR, "error during lzo 
decompression\n");
                 return AVERROR_INVALIDDATA;
             }
-- 
2.17.1

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