avformat/libopenmpt: Don't discard const

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

diff --git a/libavformat/libopenmpt.c b/libavformat/libopenmpt.c
index 52511aba56c931f3abe910cd8e3f196576da87af..b07da5f078d1abbdd64548a2487f44f5e1f706d0 100644 (file)
--- a/libavformat/libopenmpt.c
+++ b/libavformat/libopenmpt.c
@@ -218,7 +218,7 @@ static int read_seek_openmpt(AVFormatContext *s, int stream_idx, int64_t ts, int
     return 0;
 }
 
-static int probe_openmpt_extension(AVProbeData *p)
+static int probe_openmpt_extension(const AVProbeData *p)
 {
     const char *ext;
     if (p->filename) {