walker stop walking when got ErrPermission

[mattn]

When the file or directory are not permitted for the user, walker stop and return error.

[saracen]

@mattn

Thanks for raising this issue. I've created PR #2 that I intend to merge soon to address this.

If you're able to test the solution to see if it works for your use case that'd be really helpful!

[mattn]

Great! This is we want.

[saracen]

@mattn Merged!

[mattn]

Thank you.