path: isAbsolute() should always return boolean

On Windows, path.isAbsolute() returns an empty string on failed cases.
This forces the return value to always be boolean.

Reviewed-by: Trevor Norris <trev.norris@gmail.com>
test: fix test-net-remote-address-port

Do not use first socket in second socket's connect handler. Probably a
copy/paste mistake.

Reviewed-by: Trevor Norris <trev.norris@gmail.com>