[FFmpeg-cvslog] avio: make AVIOContext.av_class pointer to const

[Mans Rullgard]

ffmpeg | branch: master | Mans Rullgard <mans at mansr.com> | Wed Apr 18 21:01:15 2012 +0100| [6208313aebb29b2fef263b705d82b27c8844e3f3] | committer: Mans Rullgard

avio: make AVIOContext.av_class pointer to const

Fix this warning:
libavformat/aviobuf.c:663:20: warning: assignment discards qualifiers from pointer target type

Although this is a public header, it should remain source and
binary compatible.

Signed-off-by: Mans Rullgard <mans at mansr.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6208313aebb29b2fef263b705d82b27c8844e3f3
---

 libavformat/avio.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavformat/avio.h b/libavformat/avio.h
index 0ab92c3..10c0a12 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -78,7 +78,7 @@ typedef struct {
      * warning -- this field can be NULL, be sure to not pass this AVIOContext
      * to any av_opt_* functions in that case.
      */
-    AVClass *av_class;
+    const AVClass *av_class;
     unsigned char *buffer;  /**< Start of the buffer. */
     int buffer_size;        /**< Maximum buffer size */
     unsigned char *buf_ptr; /**< Current position in the buffer */