font-face missing a space

[MayhemOfHell]

Hey there,

This is my first Github issue and just signed up, so figured might as well submit this issue as seen it used a few spaces away.

Basically i was trying to mincss font-awesome and it was causing errors, Had to modify CssMin.php on line 459... Was missing a space after the @font-face line.

Worth checking anything else. one extra space vs people not using it.. i'd go the one extra space.

[MayhemOfHell]

Okay, well it did work initially... I might have had a weird cache going on, Now its failing for me again even with a manual spacing on media queries.

Either way, think this should be tested and confirmed.. Simply unable to minify font-awesome.css