Fix crash on queue stop (#830)

Author: JohannesEbke

velocity.js

@@ -3004,7 +3004,12 @@
 				/* Note: Velocity rolls its own delay function since jQuery doesn't have a utility alias for $.fn.delay()
 				 (and thus requires jQuery element creation, which we avoid since its overhead includes DOM querying). */
 				if (parseFloat(opts.delay) && opts.queue !== false) {
-					$.queue(element, opts.queue, function(next) {
+					$.queue(element, opts.queue, function(next, clearQueue) {
+						if (clearQueue === true) {
+							/* Do not continue with animation queueing. */
+							return true;
+						}
+
 						/* This is a flag used to indicate to the upcoming completeCall() function that this queue entry was initiated by Velocity. See completeCall() for further details. */
 						Velocity.velocityQueueEntryFlag = true;