error is -1

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@12959 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/mov.c

@@ -451,7 +451,7 @@ static int mov_read_mdhd(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
     int lang;
 
     if (version > 1)
-        return 1; /* unsupported */
+        return -1; /* unsupported */
 
     get_be24(pb); /* flags */
     if (version == 1) {