DSN: fix null deref when bounce is due to conn-timeout. Bug 1630

[user/henk/code/exim.git] / src / src / lookups / dnsdb.c

diff --git a/src/src/lookups/dnsdb.c b/src/src/lookups/dnsdb.c
index 2e6805dc900c196be989610d88c098992f47b496..e3de279e25477ffadd73ea7d2f96074668b3609d 100644 (file)
--- a/src/src/lookups/dnsdb.c
+++ b/src/src/lookups/dnsdb.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2014 */
+/* Copyright (c) University of Cambridge 1995 - 2015 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 #include "../exim.h"
@@ -391,7 +391,7 @@ while ((domain = string_nextinlist(&keystring, &sep, NULL, 0)))
       if (type == T_A || type == T_AAAA || type == T_ADDRESSES)
         {
         dns_address *da;
-        for (da = dns_address_from_rr(&dnsa, rr); da != NULL; da = da->next)
+        for (da = dns_address_from_rr(&dnsa, rr); da; da = da->next)
           {
           if (ptr != 0) yield = string_cat(yield, &size, &ptr, outsep, 1);
           yield = string_cat(yield, &size, &ptr, da->address,