fix calling play() then cancel() on an animation has different results in chrome and safari#125

xaviergonz wants to merge 1 commit intomotiondivision:mainmotiondivision/motionone:mainfrom

xaviergonz:fix-calling-play-then-cancel-on-an-animation-has-different-results-in-chrome-and-in-safarixaviergonz/motionone:fix-calling-play-then-cancel-on-an-animation-has-different-results-in-chrome-and-in-safariCopy head branch name to clipboard