refactor(nix-compat/wire/bytes): fold TrailerReader into BytesReader r/8030

The TrailerReader has no purpose separate from BytesReader, and the
code gets a fair bit simpler this way.

EOF handling is simplified, since we just rely on the implicit
behaviour of the existing case.

Change-Id: Id9b9f022c7c89fbc47968a96032fc43553af8290
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11539
Reviewed-by: Brian Olsen <me@griff.name>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

0 files changed, 0 insertions, 0 deletions