# HG changeset patch
# User Michiel Broek <mbroek@mbse.eu>
# Date 1404766319 -7200
# Node ID d08bf980ff280c41168ef153d9a1fec5efab6654
# Parent  2c28afc329a575c6d5b01a705f521622b4559594
Fixed NULL writing

diff -r 2c28afc329a5 -r d08bf980ff28 thermferm/rdconfig.c
--- a/thermferm/rdconfig.c	Mon Jul 07 22:31:07 2014 +0200
+++ b/thermferm/rdconfig.c	Mon Jul 07 22:51:59 2014 +0200
@@ -173,7 +173,7 @@
 	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
 	return 1;
     }
-    if ((rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "AIR_ADDRESS", "%s", Config.air_address)) < 0) {
+    if (Config.air_address && (rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "AIR_ADDRESS", "%s", Config.air_address)) < 0) {
 	syslog(LOG_NOTICE, "wrconfig: error at xmlTextWriterWriteFormatElement");
 	return 1;
     }