git/odb: simplify Blob.Encode
git/odb: simplify Blob.Encode

dakotahawkins/git-lfs,aleb/git-lfs,dakotahawkins/git-lfs,aleb/git-lfs,dakotahawkins/git-lfs,aleb/git-lfs,Jericho25/-git-lfs_miilkyway,Jericho25/-git-lfs_miilkyway,Jericho25/-git-lfs_miilkyway,github/git-lfs,github/git-lfs,github/git-lfs