Fixed error check - 0 is actually an acceptable msgid.
Fixed error check - 0 is actually an acceptable msgid.

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