encoder: bytes.Buffer will never error on Write*()
encoder: bytes.Buffer will never error on Write*()

This is explicitly stated in bytes.Buffer documentation and is already
relyed by ogórek in another place:

https://github.com/kisielk/og-rek/blob/c7dbf2e4/ogorek.go#L524

Sean-Der/og-rek,kisielk/og-rek