Replace helm-match-line-color-current-line with
helm-highlight-current-line.

See commit emacs-helm/helm@3c9cdce47e9a8cf506fb2ebcc4d4ad4af0be638a.
Merge pull request #19 from lbsx/replace-helm-match-line-color-current-line

Replace helm-match-line-color-current-line with helm-highlight-current-line.