[css-backgrounds-3] `spread` variable is undefined in "adjusted radius dimension"

[AtkinsSJ]

adjusted radius dimension lists three parameters:

To compute the adjusted radius dimension given numbers coverage, radius, and outset:

However, step 1 uses spread, which isn't defined:

1. If radius is greater than spread, or if coverage is greater than 1, then return radius + outset.

As a side note for anyone who fixes this: The related outset-adjusted border radius algorithm misspells "adjusted" in a couple of variable names: adustedRadiusWidth and adustedRadiusHeight.

Pinging @noamr as these were both introduced in #12896.

[noamr]

I have refactored this algo here
#13173

Care to take a look?

[AtkinsSJ]

Gave it a quick look and nothing jumps out at me. I've made a note to try it out on Monday and see how it goes.