fix hash length tested in anonymous sasl test
fix hash length tested in anonymous sasl test

jimzhou1986/node-xmpp-server,xmppjs/xmpp.js,ggozad/node-xmpp,ggozad/node-xmpp,node-xmpp/node-xmpp,node-xmpp/node-xmpp,xmppjs/xmpp.js