[FFmpeg-cvslog] tools/target_dec_fuzzer: Fix return code on open failure

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Thu Apr 27 02:18:03 2017 +0200| [966cbfbc83db34f50616fe582d1a53f81d292282] | committer: Michael Niedermayer

tools/target_dec_fuzzer: Fix return code on open failure

Fixes: 1271/clusterfuzz-testcase-minimized-6095220498235392

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=966cbfbc83db34f50616fe582d1a53f81d292282
---

 tools/target_dec_fuzzer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index dc72fd8b5d..e6a942cb30 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -170,7 +170,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 
     int res = avcodec_open2(ctx, c, NULL);
     if (res < 0)
-        return res;
+        return 0; // Failure of avcodec_open2() does not imply that a issue was found
 
     FDBCreate(&buffer);
     int got_frame;