minor refactoring

Author: grs

lib/sasl.js

@@ -224,14 +224,14 @@ var SaslClient = function (connection, mechanisms, hostname) {
 };
 
 SaslClient.prototype.on_sasl_mechanisms = function (frame) {
-    const frame_sasl_mechanisms = (typeof frame.performative.sasl_server_mechanisms === 'undefined' || frame.performative.sasl_server_mechanisms === null)
-        ? []
-        : (!Array.isArray(frame.performative.sasl_server_mechanisms)
-            ? [ frame.performative.sasl_server_mechanisms ]
-            : frame.performative.sasl_server_mechanisms);
-
-    for (var i = 0; this.mechanism === undefined && i < frame_sasl_mechanisms.length; i++) {
-        var mech = frame_sasl_mechanisms[i];
+    var offered_mechanisms = [];
+    if (Array.isArray(frame.performative.sasl_server_mechanisms)) {
+        offered_mechanisms = frame.performative.sasl_server_mechanisms;
+    } else if (frame.performative.sasl_server_mechanisms) {
+        offered_mechanisms = [frame.performative.sasl_server_mechanisms];
+    }
+    for (var i = 0; this.mechanism === undefined && i < offered_mechanisms.length; i++) {
+        var mech = offered_mechanisms[i];
         var f = this.mechanisms[mech];
         if (f) {
             this.mechanism = typeof f === 'function' ? f() : f;