libavformat/mxfenc.c:360: error: Uninitialized Value
  The value read from version_string_len was never initialized.

libavformat/mxfenc.c:360:9: 
358.     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
359.         mxf_write_local_tag(pb, version_string_len, 0x3C04);
360.         put_buffer(pb, LIBAVFORMAT_IDENT, version_string_len);
             ^
361.     }
362. 
