fixed: in HTMLParser::CheckClosingTags() don't return immediately if stack_len is equal to 2

src/html/htmlparser.cpp

@@ -1894,7 +1894,7 @@ void HTMLParser::CheckClosingTags()
 	// on the stack we have only opening tags
 	// but only the last tag is a closing tag
 
-	if( stack_len < 3 )
+	if( stack_len == 1 )
 	{
 		PopStack();
 		return;