Created Unassigned: Unable to get url's in @font-family statements to rewrite [87]

It just doesn't seem to rewrite the relating URL's at all.

CSS:

```
@font-face {
font-family: 'Icons';
src: url("../fonts/open-iconic.eot");
src: url("../fonts/open-iconic.eot?#iconic-sm") format("embedded-opentype"), url("../fonts/open-iconic.woff") format("woff"), url("../fonts/open-iconic.ttf") format("truetype"), url("../fonts/open-iconic.otf") format("opentype"), url("../fonts/open-iconic.svg#iconic-sm") format("svg");
font-weight: normal;
font-style: normal; }
```