avcodec/scpr3: add missing check for decode_value3() return value

Fixes ticket #7866.

Signed-off-by: James Almer <jamrial@gmail.com>

diff --git a/libavcodec/scpr3.c b/libavcodec/scpr3.c
index f92ccfa90262e6294fda2668b38f0a382bfa7cbd..5cfad9f4d212bd2ca5b748c91a53798fd5351632 100644 (file)
--- a/libavcodec/scpr3.c
+++ b/libavcodec/scpr3.c
@@ -1038,6 +1038,9 @@ static int decompress_p3(AVCodecContext *avctx,
                          s->range_model3.freqs[1],
                          s->range_model3.cnts,
                          s->range_model3.dectab, &temp);
+    if (ret < 0)
+        return ret;
+
     min += temp << 8;
     ret |= decode_value3(s, 255, &s->range_model3.cntsum,
                          s->range_model3.freqs[0],