https://bugzilla.novell.com/show_bug.cgi?id=566434
 http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.164&r2=1.166

--- lib/xmlparse.c	2007-05-08 04:25:35.000000000 +0200
+++ lib/xmlparse.c.oden	2010-01-08 15:53:46.992897073 +0100
@@ -3703,6 +3703,9 @@ doProlog(XML_Parser parser,
         return XML_ERROR_UNCLOSED_TOKEN;
       case XML_TOK_PARTIAL_CHAR:
         return XML_ERROR_PARTIAL_CHAR;
+      case -XML_TOK_PROLOG_S:
+        tok = -tok;
+        break;
       case XML_TOK_NONE:
 #ifdef XML_DTD
         /* for internal PE NOT referenced between declarations */