Fix the issue #51 that crashed the server on Linux.

[brnrd]

With this slight change, a Node.js server that imports the module still works with Windows but now works too with Linux.

The hosts object contains a _store that's an object containing itself a _store. The access to the second one was missing.

{ _zone: '.',
_store:
{ _store: { _store: [Object] }, <----
_zone: '.',
_max_keys: undefined,
_ttl: { length: 0, root: undefined, _comparator: [Function] } },
purge: [Function] }

It would solve the issue #51 and it would be great to push it to NPM as well.

Thanks.

[taoeffect]

This project is no longer maintained, but we are happy to link to a well maintained fork.

Please see: #111

[jameshartig]

@brnrd I'm looking and noticing that the _store object is an instance of MemoryStoreExpire which does have a _store on it, but it also has a set method so the existing code should be working fine. Can you provide a test case I can run easily to try and debug this?

[brnrd]

@fastest963 @taoeffect Since this was posted almost 3 years ago, I'm not sure this is still an issue.
I haven't pursued the project where I was using node-dns, therefore I don't really need it anymore.

And sadly, I don't have the time now to debug it. This PR could be closed if that's ok with you.