Declare the url_write buffer parameter as const

Originally committed as revision 23401 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 1 insertions, 1 deletions

diff --git a/libavformat/file.c b/libavformat/file.c
index 8873d5fcaf..d6ba1fa362 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -64,7 +64,7 @@ static int file_read(URLContext *h, unsigned char *buf, int size)
     return read(fd, buf, size);
 }
 
-static int file_write(URLContext *h, unsigned char *buf, int size)
+static int file_write(URLContext *h, const unsigned char *buf, int size)
 {
     int fd = (intptr_t) h->priv_data;
     return write(fd, buf, size);