Consumes all memory and crashes on unclosed invalid calc( at EOF

[tophf]

Consumes all memory and crashes on unclosed invalid calc( at EOF.

Test case:

#test{width:calc(100% =

The bug is caused by Parser.js#L2012:

while (lt !== Tokens.COMMA && lt !== Tokens.S && lt !== Tokens.RPAREN) {

which should also check for Tokens.EOF