1 files changed, 1 insertions, 0 deletions

diff --git a/mfd/bi_dns.m4 b/mfd/bi_dns.m4
index a3a6ef13..6d071e7e 100644
--- a/mfd/bi_dns.m4
+++ b/mfd/bi_dns.m4
@@ -122,24 +122,25 @@ MF_DEFUN(dns_getname, STRING, STRING ipstr)
 
         dnstat = ptr_lookup(addr, names, NELEMS(names), &ttl, NULL, 0);
         switch (dnstat) {
         case dns_success: {
                 size_t i;
                 size_t ncount;
 
                 for (ncount = 0; ncount < NELEMS(names) && names[ncount];
                      ncount++);
                 
                 qsort(names, ncount, sizeof names[0], hostname_cmp);
 
+                MF_OBSTACK_BEGIN();
                 for (i = 0; i < ncount; i++) {
                         if (i > 0)
                                 MF_OBSTACK_1GROW(' ');
                         MF_OBSTACK_GROW(names[i]);
                 }
                 MF_OBSTACK_1GROW(0);
 
                 for (; i < ncount; i++) 
                         free(names[i]);
 
                 MF_RETURN_OBSTACK();
         }