fix warning, write_ftyp return int now

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@13769 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/movenc.c

@@ -1374,7 +1374,7 @@ static int mov_write_mdat_tag(ByteIOContext *pb, MOVContext *mov)
 }
 
 /* TODO: This needs to be more general */
-static void mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
+static int mov_write_ftyp_tag(ByteIOContext *pb, AVFormatContext *s)
 {
     MOVContext *mov = s->priv_data;
     offset_t pos = url_ftell(pb);