cosmetics, reindent, add/remove some empty lines, redundant comment

Originally committed as revision 17205 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/mxfenc.c

@@ -1103,7 +1103,6 @@ static void mxf_write_index_table_segment(AVFormatContext *s)
             put_byte(pb, sc->temporal_reordering);
             if (sc->temporal_reordering)
                 temporal_reordering = 1;
-        // slice number
             if (i == 0) { // video track
                 put_byte(pb, 0); // slice number
                 put_be32(pb, KAG_SIZE); // system item size including klv fill
@@ -1207,7 +1206,6 @@ static void mxf_write_partition(AVFormatContext *s, int bodysid,
 
     // write klv
     put_buffer(pb, key, 16);
-
     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
 
     // write partition value
@@ -1473,6 +1471,7 @@ static int mxf_write_header(AVFormatContext *s)
             present[sc->index] = 1;
         } else
             present[sc->index]++;
+
         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
         sc->track_essence_element_key[15] = present[sc->index];
         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
@@ -1806,6 +1805,7 @@ static int mxf_write_footer(AVFormatContext *s)
     av_freep(&mxf->timecode_track);
 
     mxf_free(s);
+
     return 0;
 }