From c25bf0a2398abc95fec5fdead07ceac33aa14dfc Mon Sep 17 00:00:00 2001
From: Daniel Zimmermann <daniel.luke.zimmermann@gmail.com>
Date: Sat, 14 May 2016 22:16:36 +1000
Subject: [PATCH] Correctly handle touch PointerEvents

`onPointerDown/Up` may call `capture/releasePointer`
with `"touch"` as the pointerType, which would result
in a bug as `touchCount` would be `undefined`.

`capture/releasePointer` should just default to a
count of `1` if not specified. This properly retains
the existing behaviour for non-TouchEvent handling.
---
 src/mousetracker.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/mousetracker.js b/src/mousetracker.js
index 6b78f4d8..498a72ac 100644
--- a/src/mousetracker.js
+++ b/src/mousetracker.js
@@ -1357,11 +1357,11 @@
      * @private
      * @inner
      */
-    function capturePointer( tracker, pointerType, touchCount ) {
+    function capturePointer( tracker, pointerType, pointerCount ) {
         var pointsList = tracker.getActivePointersListByType( pointerType ),
             eventParams;
 
-        pointsList.captureCount += (pointerType === 'touch' ? touchCount : 1);
+        pointsList.captureCount += (pointerCount || 1);
 
         if ( pointsList.captureCount === 1 ) {
             if ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version < 9 ) {
@@ -1400,11 +1400,11 @@
      * @private
      * @inner
      */
-    function releasePointer( tracker, pointerType, touchCount ) {
+    function releasePointer( tracker, pointerType, pointerCount ) {
         var pointsList = tracker.getActivePointersListByType( pointerType ),
             eventParams;
 
-        pointsList.captureCount -= (pointerType === 'touch' ? touchCount : 1);
+        pointsList.captureCount -= (pointerCount || 1);
 
         if ( pointsList.captureCount === 0 ) {
             if ( $.Browser.vendor === $.BROWSERS.IE && $.Browser.version < 9 ) {