MySqlConnector unix_socket should check for not empty

[ryantxr]

In MySqlConnector you have:

        if (isset($unix_socket)) {
            $dsn['unix_socket'] = $unix_socket;
        }

I think it really should be this:

        if (!empty($unix_socket)) {
            $dsn['unix_socket'] = $unix_socket;
        }

The standard database config file that comes with Laravel defines unix_socket but leaves it empty. The code you have now sees that unix_socket is set and tries to use it even though it is an empty string.

I will do a pull request if you like.

[leomarquine]

I just tagged a new release that should fix it.