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/libavdevice/oss_enc.c b/libavdevice/oss_enc.c
index d6a512a264..704f434c53 100644
--- a/libavdevice/oss_enc.c
+++ b/libavdevice/oss_enc.c
@@ -55,9 +55,9 @@ static int audio_write_header(AVFormatContext *s1)
 static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt)
 {
     OSSAudioData *s = s1->priv_data;
+    const uint8_t *buf = pkt->data;
     int len, ret;
     int size= pkt->size;
-    uint8_t *buf= pkt->data;
 
     while (size > 0) {
         len = FFMIN(OSS_AUDIO_BLOCK_SIZE - s->buffer_ptr, size);