vim-less and mixins with parentheses highlighting

[p4tient]

There seems to be a conflict between vim-less and vim-css3-syntax when mixin uses parentheses.
A hope screenshots will illustrate the issue better:

With parentheses:

Without parentheses:

Filetype is detected successfully.
Highlighting works correctly when vim-css3-syntax is disabled.

[hail2u]

This is a bug of css3-mediaqueries.vim. Commit b48d27a should fix this issue.

Seems fine for me. Thanks.

[p4tient]

Thank you for super quick fix, Kyo :)