[FFmpeg-cvslog] lavu/error: fix sign error in av_sterror() error code

[Stefano Sabatini]

ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Fri Jun  1 23:30:16 2012 +0200| [5683de00e99e4be87419a97d521887f94acc937a] | committer: Stefano Sabatini

lavu/error: fix sign error in av_sterror() error code

The value returned by strerror_r may be positive depending on the system,
so it is necessary to use AVERROR() in order to get a negative
number. This way the successive negative check will not fail, and the
function will print a meaningful error message on the buffer.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5683de00e99e4be87419a97d521887f94acc937a
---

 libavutil/error.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavutil/error.c b/libavutil/error.c
index 78bceb4..0a3b4bf 100644
--- a/libavutil/error.c
+++ b/libavutil/error.c
@@ -61,7 +61,7 @@ int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
         av_strlcpy(errbuf, entry->str, errbuf_size);
     } else {
 #if HAVE_STRERROR_R
-        ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
+        ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
 #else
         ret = -1;
 #endif