Make a semicolon have no effect when in declaration mode.

--HG--
extra : rebase_source : 7c3c7b705e2a679120f6f43427e489be029c493d

Author: tabatkins

css3-syntax/Overview.html

@@ -2281,6 +2281,8 @@ <h4 id=declaration-mode><span class=secno>3.5.7. </span> <dfn
   <dl>
    <dt>whitespace token
 
+   <dt>semicolon token
+
    <dd> Do nothing. Remain in this mode.
 
    <dt><span class=temp>}</span> token

css3-syntax/Overview.src.html

@@ -2250,7 +2250,8 @@ <h4>
 		Consume the <i>next input token</i>.
 
 	<dl>
-		<dt>whitespace token</dt>
+		<dt>whitespace token
+		<dt>semicolon token
 		<dd>
 			Do nothing.
 			Remain in this mode.