[FFmpeg-cvslog] avutil/log: allow av_log_set_callback (NULL)

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Thu May 10 19:11:23 2012 +0200| [7c7c5b24152d2d7e70a416019b7076f61487844e] | committer: Michael Niedermayer

avutil/log: allow av_log_set_callback (NULL)

Idea-by: Don Moir <donmoir at comcast.net>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7c7c5b24152d2d7e70a416019b7076f61487844e
---

 libavutil/log.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/libavutil/log.c b/libavutil/log.c
index 5e2b14b..fbe9ea0 100644
--- a/libavutil/log.c
+++ b/libavutil/log.c
@@ -165,7 +165,8 @@ void av_log(void* avcl, int level, const char *fmt, ...)
 
 void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
 {
-    av_log_callback(avcl, level, fmt, vl);
+    if(av_log_callback)
+        av_log_callback(avcl, level, fmt, vl);
 }
 
 int av_log_get_level(void)