--- cgi.c.orig	2007-07-23 14:34:21.000000000 -0400
+++ cgi.c	2007-07-23 14:35:55.000000000 -0400
@@ -1371,6 +1371,7 @@
   nerr_error_traceback(err, &str);
   cgiwrap_write(str.buf, str.len);
   cgiwrap_writef("</pre></body></html>\n");
+  string_clear(&str);
 }
 
 void cgi_error (CGI *cgi, const char *fmt, ...)