avformat/movenc: Remove unneeded variable from mov_find_codec_tag()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/movenc.c

@@ -1611,8 +1611,6 @@ static unsigned int validate_codec_tag(const AVCodecTag *const *tags,
 
 static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
 {
-    unsigned int tag;
-
     if (is_cover_image(track->st))
         return ff_codec_get_tag(codec_cover_image_tags, track->par->codec_id);
 
@@ -1623,12 +1621,11 @@ static unsigned int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
             av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
                    "Quicktime/Ipod might not play the file\n");
 
-    if (track->mode == MODE_MOV)
-        tag = mov_get_codec_tag(s, track);
-    else
-        tag = validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
+    if (track->mode == MODE_MOV) {
+        return mov_get_codec_tag(s, track);
+    } else
+        return validate_codec_tag(s->oformat->codec_tag, track->par->codec_tag,
                                   track->par->codec_id);
-    return tag;
 }
 
 /** Write uuid atom.