Fix For #4600 - Error When Only Frozen Columns Are Present and render Horizontal is Enabled

[kunaljaykam]

Fixes #4600

[olifolkerd]

Hey @kunaljaykam

Thanks for the PR, unfortunatly this fix reslved the issues by looking through all columns and calling the function. The whole point of the horizontal renderer is that it only does calculation on the columns visible in the view port, other wise it becomes very inefficient with large numbers of columns. but your idea can be easily replicated without the need to look at the whole tables worth of columns, so i will apply the appropriate patch in the next patch release.

Cheers

Oli :)