avformat/hlsenc: reindent code

and remove redundant empty line

libavformat/hlsenc.c

@@ -2542,7 +2542,6 @@ static int hls_write_trailer(struct AVFormatContext *s)
             return AVERROR(ENOMEM);
         }
 
-
         if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
             int range_length = 0;
             if (!vs->init_range_length) {
@@ -2582,10 +2581,8 @@ static int hls_write_trailer(struct AVFormatContext *s)
         hlsenc_io_close(s, &vs->out, filename);
         av_free(filename);
 
-
 failed:
         av_write_trailer(oc);
-
         if (oc->url[0]) {
             proto = avio_find_protocol_name(oc->url);
             use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);