cocos2d/cocos2d-x — pull request #8940 by TimothyZhang (2014-10-27 03:32:46+00:00)
Title: reset-ccscrollview-state-when-not-active

If scrollview is removed from the scene, or set to invisible, between touches began and touched end/cancel, _touches would remain not empty. After the scrollview entering the scene, or set to visible again, touch events
could behave incorrectly because _touches is not empty.