Ignore null cdata

diff --git a/xml-utils.lisp b/xml-utils.lisp
index a3305caa097ce68ed1d2b45df4e9f2acd565e8fe..fc80feb77e33ae86904fcfc6677cb4c324412a99 100644 (file)
--- a/xml-utils.lisp
+++ b/xml-utils.lisp
@@ -81,6 +81,8 @@ and position of character following end tag."
 
 (defun write-cdata (str s)
   (declare (simple-string str) (optimize (speed 3) (safety 0) (space 0)))
+  (unless str
+    (return-from write-cdata nil))
   (do ((len (length str))
        (i 0 (1+ i)))
       ((= i len) str)
@@ -171,4 +173,3 @@ and position of character following end tag."
                     :organization organization :type type :label label :language language
                     :url url :entities entities))
   stream)
-