From 93eb340b2349dacf7b44b219233ce3f3610c1d5d Mon Sep 17 00:00:00 2001
From: Rachel Fenichel <fenichel@google.com>
Date: Tue, 15 May 2018 14:37:24 -0700
Subject: [PATCH] Update gesture.js

Make the code match the annotation (and all other uses of the variable)
---
 core/gesture.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/gesture.js b/core/gesture.js
index 127bbf36b..d983e7a2d 100644
--- a/core/gesture.js
+++ b/core/gesture.js
@@ -69,7 +69,7 @@ Blockly.Gesture = function(e, creatorWorkspace) {
    * @type {goog.math.Coordinate}
    * @private
    */
-  this.currentDragDeltaXY_ = 0;
+  this.currentDragDeltaXY_ = null;
 
   /**
    * The bubble that the gesture started on, or null if it did not start on a