[FFmpeg-cvslog] ffmpeg_opt: Check for localtime() failure

[Michael Niedermayer]

ffmpeg | branch: release/2.2 | Michael Niedermayer <michaelni at gmx.at> | Fri Jun 12 15:36:20 2015 +0200| [8bb21c031074ed6346e8bb50977c0b9fc41aaa6f] | committer: Michael Niedermayer

ffmpeg_opt: Check for localtime() failure

Found-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 8e91d9652ea5048d9014e7636e12c6ed4732d7b7)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8bb21c031074ed6346e8bb50977c0b9fc41aaa6f
---

 ffmpeg_opt.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
index 0e75dea..d72858d 100644
--- a/ffmpeg_opt.c
+++ b/ffmpeg_opt.c
@@ -2253,6 +2253,9 @@ static int opt_vstats(void *optctx, const char *opt, const char *arg)
     time_t today2 = time(NULL);
     struct tm *today = localtime(&today2);
 
+    if (!today)
+        return AVERROR(errno);
+
     snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
              today->tm_sec);
     return opt_vstats_file(NULL, opt, filename);