Added zero timeout to make sure that ldap_result doesn't block when the server tanks.
Added zero timeout to make sure that ldap_result doesn't block when
the server tanks.

wavify/node-LDAP,jeremycx/node-LDAP,jeremycx/node-LDAP,wavify/node-LDAP,jeremycx/node-LDAP,wavify/node-LDAP,jeremycx/node-LDAP,wavify/node-LDAP