ignore elf sections without ReaderAt
ignore elf sections without ReaderAt

Ignore sections that are compressed. There may be a more elaborate fix
using `Section.Open`, but this should be sufficient. It's likely now
with `embed` usage of this package will be going down.

Fixes #6.
See https://github.com/golang/go/issues/54227 for more context.

daaku/go.zipexe