avformat/avc: reindent after the last commit

Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/avc.c

@@ -161,6 +161,7 @@ int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
     avio_wb16(pb, pps_size);
     avio_write(pb, pps, pps_size);
     av_free(start);
+
     return 0;
 }