From 12026eac09e773e83887a6073d5a034979ce7043 Mon Sep 17 00:00:00 2001
From: "Kevin M. Rosenberg" <kevin@rosenberg.net>
Date: Tue, 9 Apr 2013 01:37:16 -0600
Subject: [PATCH] Ignore null cdata

---
 xml-utils.lisp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xml-utils.lisp b/xml-utils.lisp
index a3305ca..fc80feb 100644
--- 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)
-
-- 
2.34.1