SecureGroupHeader InitialConfig scale does not affect header

[zork]

When a scale is set in the initialconfiguration of a secure groupheader unit button it affects the button, but not the header.

"oUF-initialConfigFunction", ([[
        self:SetWidth(%d)
        self:SetHeight(%d)
        self:SetScale(%f)
      ]]):format(110,26,0.5)

The result is sth like this:

0.5 scale:
http://imgur.com/a/OWWvn

0.8 scale:
http://imgur.com/a/ifeUa

1 scale:
http://imgur.com/a/PrqBh

1.25 scale: (header does not even fit all the unit buttons!)
http://imgur.com/a/1mdHn

The header resize calculation works of the unit button width/height (https://github.com/tomrus88/Blizzard...aders.lua#L231), but for whatever reason it is ignoring the scale of the button resulting in a way to large unit header on low scale values and to low size if the scale is > 1.

This destroys all offsets since it only works for scale 1 properly.