[css-syntax] Log a parse error for unclosed comments.

Author: tabatkins

css-syntax/Overview.bs

@@ -1156,9 +1156,10 @@ Consume comments</h4>
 	or up to an EOF code point.
 	Return to the start of this step.
 
-	Otherwise,
-	return nothing.
+	If the following paragraph ended by consuming an EOF code point,
+	this is a <a>parse error</a>.
 
+	Return nothing.
 
 
 <h4 id="consume-a-numeric-token">

css-syntax/Overview.html

@@ -58,7 +58,7 @@
 </p>
   <h1 class="p-name no-ref" id=title>CSS Syntax Module Level 3</h1>
   <h2 class="no-num no-toc no-ref heading settled heading" id=subtitle><span class=content>Editor’s Draft,
-    <span class=dt-updated><span class=value-title title=20140627>27 June 2014</span></span></span></h2>
+    <span class=dt-updated><span class=value-title title=20140707>7 July 2014</span></span></span></h2>
   <div data-fill-with=spec-metadata><dl>
 	<dt>This version:
 	<dd><a class=u-url href=http://dev.w3.org/csswg/css-syntax/>http://dev.w3.org/csswg/css-syntax/</a>
@@ -2248,9 +2248,10 @@ <h4 class="heading settled heading" data-level=4.3.2 id=consume-comments><span c
 	or up to an EOF code point.
 	Return to the start of this step.</p>
 
-<p>Otherwise,
-	return nothing.</p>
+<p>If the following paragraph ended by consuming an EOF code point,
+	this is a <a data-link-type=dfn href=#parse-error title="parse error">parse error</a>.</p>
 
+<p>Return nothing.</p>
 
 
 <h4 class="heading settled heading" data-level=4.3.3 id=consume-a-numeric-token><span class=secno>4.3.3 </span><span class=content>