Fixed zero-length mutlibulk replies

index.js

@@ -118,6 +118,9 @@ RedisReplyParser.prototype.execute = function (incoming_buf) {
                 this.multi_bulk_length = parseInt(small_toString(this.tmp_buffer), 10);
                 this.multi_bulk_replies = [];
                 this.state = "type";
+                if (0 == this.multi_bulk_length) {
+                    this.send_reply([]);
+                }
             } else {
                 this.emit("error", new Error("didn't see LF after NL reading multi bulk count"));
                 this.state = "type"; // try to start over with next data chunk

test.js

@@ -209,10 +209,10 @@ tests.KEYS = function () {
     });
 };
 
-tests.KEYS_EMPTY = function () {
-    var name = "KEYS_EMPTY";
+tests.MULTIBULK_ZERO_LENGTH = function () {
+    var name = "MULTIBULK_ZERO_LENGTH";
     client.KEYS(['users:*'], function(err, results){
-        assert.strictEqual(null, err, 'error on empty KEYS');
+        assert.strictEqual(null, err, 'error on empty multibulk reply');
         assert.strictEqual(0, results.length);
         next(name);
     });