fix compilation, add missing parenthesis

Originally committed as revision 18367 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/movenc.c

@@ -604,7 +604,7 @@ static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
     // keep original tag for subs, ipod supports both formats
     if (!(track->enc->codec_type == CODEC_TYPE_SUBTITLE &&
         (tag == MKTAG('t','x','3','g') ||
-         tag == MKTAG('t','e','x','t')))
+         tag == MKTAG('t','e','x','t'))))
         tag = codec_get_tag(codec_ipod_tags, track->enc->codec_id);
     if (!match_ext(s->filename, "m4a") && !match_ext(s->filename, "m4v"))
         av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "