avcodec/mpegvideo: Constify src of ff_update_duplicate_context()

Also do the same for update_duplicate_context_after_me()
in mpegvideo_enc.c.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 9c2243eed7..5c8e13947f 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -250,7 +250,7 @@ void ff_init_qscale_tab(MpegEncContext *s)
 }
 
 static void update_duplicate_context_after_me(MpegEncContext *dst,
-                                              MpegEncContext *src)
+                                              const MpegEncContext *src)
 {
 #define COPY(a) dst->a= src->a
     COPY(pict_type);