av(format|device): Add const to muxer packet data pointers

The packets given to muxers need not be writable,
so it is best to access them via const uint8_t*.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavformat/movenc.h b/libavformat/movenc.h
index e4550f7900..c6b3313deb 100644
--- a/libavformat/movenc.h
+++ b/libavformat/movenc.h
@@ -62,7 +62,7 @@ typedef struct MOVIentry {
 } MOVIentry;
 
 typedef struct HintSample {
-    uint8_t *data;
+    const uint8_t *data;
     int size;
     int sample_number;
     int offset;