Fix issue with pattern parsing in xsltCompilePatternInternal.
Import pattern parsing fix for commit: http://git.gnome.org/browse/libxslt/commit/?id=fe5a4fa33eb85bce3253ed3742b1ea6c4b59b41b

BUG=110277
Review URL: https://chromiumcodereview.appspot.com/9275001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@118654 0039d316-1c4b-4281-b951-d872f2087c98