Is the Content-Length header correct when uploading?

[MrM40]

When uploading a file the request must include a content-length header which consist of the length of the file + the length of the 40 bytes SHA1. But it seem to me the code only sent the length of the file and doesn't include the length of the SHA1.

FileUploadRequestGenerators.cs, link 53

B2 API documentation

Or am I just not capable to reading the code :-/