Queue: ensure Queue arguments are propagated without new

lib/rsvp/queue.js

@@ -21,7 +21,7 @@ var Queue = function(thenable) {
     resolved;
 
   if (!(this instanceof Queue)) {
-    return new Queue();
+    return new Queue(thenable);
   }
 
   function canceller() {

test/tests/extension_test.js

@@ -2265,6 +2265,16 @@ describe("`RSVP.Queue`", function () {
       }, 20);
     });
 
+    it('should be fulfilled without new with the thenable argument', function (done) {
+      var queue = RSVP.Queue(RSVP.resolve('bar'));
+
+      setTimeout(function() {
+        assert.equal(queue.isFulfilled, true);
+        assert.equal(queue.fulfillmentValue, 'bar');
+        done();
+      }, 20);
+    });
+
     it('should be rejected with the rejected thenable argument', function (done) {
       var queue = new RSVP.Queue(RSVP.reject('ko'));