[css-syntax] feedback

Hello,

I'm referring to
CSS Syntax Module Level 3, Editor’s Draft, 30 April 2014 
(http://dev.w3.org/csswg/css-syntax/)

Section "4.3.10 Check if three code points would start an identifier" 
describes how to check if three code points would start an identifier.

When the first code point is neither U+002D HYPHEN-MINUS, nor a 
name-start code point, nor U+005C REVERSE SOLIDUS the check should 
return false.

Add the following to the end of the section:

anything else
     Return false.

Best regards
Raffaello Giulietti