Minor hiredis handling improvement

lib/parsers/hiredis.js

@@ -4,37 +4,32 @@ var hiredis = require('hiredis');
 
 function HiredisReplyParser(return_buffers) {
     this.name = exports.name;
-    this.return_buffers = return_buffers;
-    this.reset();
+    this.reader = new hiredis.Reader({
+        return_buffers: return_buffers
+    });
 }
 
-HiredisReplyParser.prototype.reset = function () {
-    this.reader = new hiredis.Reader({
-        return_buffers: this.return_buffers || false
-    });
+HiredisReplyParser.prototype.return_data = function () {
+    try {
+        return this.reader.get();
+    } catch (err) {
+        // Protocol errors land here
+        this.send_error(err);
+        return void 0;
+    }
 };
 
 HiredisReplyParser.prototype.execute = function (data) {
-    var reply;
     this.reader.feed(data);
-    while (true) {
-        try {
-            reply = this.reader.get();
-        } catch (err) {
-            // Protocol errors land here
-            this.send_error(err);
-            break;
-        }
+    var reply = this.return_data();
 
-        if (reply === undefined) {
-            break;
-        }
-
-        if (reply && reply.constructor === Error) {
+    while (reply !== undefined) {
+        if (reply && reply.name === 'Error') {
             this.send_error(reply);
         } else {
             this.send_reply(reply);
         }
+        reply = this.return_data();
     }
 };