Allow -moz-tab-size

[fregante]

I'm not sure of what's the logic for allowing properties here, but how about -moz-tab-size?

Prefix-less tab-size is still not allowed in Firefox.

[sindresorhus]

It's already defined here:

stylelint-config-xo/index.js

Line 85 in 46439f9

'tab-size' // It's still only prefixed in Firefox

[fregante]

value-no-vendor-prefix is not what's triggering this error:

https://github.com/sindresorhus/refined-github/runs/658808320#step:4:10

source/refined-github.css
 16:2  ✖  Unexpected vendor-prefix "-moz-tab-size"   property-no-vendor-prefix

I think value-no-vendor-prefix allows display: -moz-flex while property-no-vendor-prefix allows -moz-tab-size: 2

[sindresorhus]

You're right. Can you remove that previous tab-size entry then? Since it's in the wrong place.