[FFmpeg-cvslog] avutil/avstring: add av_warn_unused_result

[Ganesh Ajjanagadde]

ffmpeg | branch: master | Ganesh Ajjanagadde <gajjanagadde at gmail.com> | Thu Oct 15 18:04:45 2015 -0400| [a0e390e8ff33392ff7ab51d9f4c830da843ddff3] | committer: Ganesh Ajjanagadde

avutil/avstring: add av_warn_unused_result

This does not trigger any warnings, but adds robustness.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a0e390e8ff33392ff7ab51d9f4c830da843ddff3
---

 libavutil/avstring.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavutil/avstring.h b/libavutil/avstring.h
index a306e89..a46d012 100644
--- a/libavutil/avstring.h
+++ b/libavutil/avstring.h
@@ -339,6 +339,7 @@ enum AVEscapeMode {
  * @return the length of the allocated string, or a negative error code in case of error
  * @see av_bprint_escape()
  */
+av_warn_unused_result
 int av_escape(char **dst, const char *src, const char *special_chars,
               enum AVEscapeMode mode, int flags);
 
@@ -378,6 +379,7 @@ int av_escape(char **dst, const char *src, const char *special_chars,
  * @return >= 0 in case a sequence was successfully read, a negative
  * value in case of invalid sequence
  */
+av_warn_unused_result
 int av_utf8_decode(int32_t *codep, const uint8_t **bufp, const uint8_t *buf_end,
                    unsigned int flags);