enableBodyScroll doesn't enable scroll #90
Description
enableBodyScroll doesn't enable scroll in situation disableBodyScroll was required (n+1)-times and enableBodyScroll n-times.
enableBodyScroll and disableBodyScroll was required without arguments.
To reproduce the issue try the next sequence of function requiring:
disableBodyScroll()
disableBodyScroll()
enableBodyScroll()
as result overflow: hidden styles in <body> still persist.
I already have prepared commit to fix this issue