fix: stack as percentage with 0 or null values (#618) [18.1.x]#619

Merged

markov00 merged 1 commit intoelastic:18.1.xfrom markov00:backport/18.1.x/pr-618

Apr 6, 2020

+405-12

Commits on Apr 3, 2020

fix: stack as percentage with 0 or null values (elastic#618 )
markov00
committed