Small media query parsing bug

[matthew-dean]

To reproduce:

@media ((color) and (hover)), all { 
  body {
    background: green;
  }
}

Current behavior:

Parsing error, missing closing ')'

Expected behavior:

You can check the CSS validator to see this is valid. Just randomly came across this today.

Environment information:

• less version:
• nodejs version:
• operating system: