chownr calling readdir on network-share file causes ENOTSUP, but isn't handled correctly

[rocketmonkeys]

Same problem as this:
isaacs/node-glob#205

But in chrownr (https://github.com/isaacs/chownr/blob/master/chownr.js#L11), we have:

fs.readdir(p, function (er, children) {
    // any error other than ENOTDIR means it's not readable, or
    // doesn't exist.    give up.
    if (er && er.code !== "ENOTDIR") return cb(er)

When readdir()'ing a local file, we get ENOTDIR (good). Same thing on a network path gives ENOTSUP (weird).

We need to support ENOTSUP as well. Simple fix should be:

fs.readdir(p, function (er, children) {
    // any error other than ENOTDIR/ENOTSUP means it's not readable, or
    // doesn't exist.    give up.
    if (er && er.code !== "ENOTDIR" && er.code !== "ENOTSUP") return cb(er)

I'll make a small PR for this.

[isaacs]

fixed on 03eb97e

[rocketmonkeys]

Thanks!