Revert "ares_parse_aaaa_reply: fix leak when reply contains 1 alias and no address"

This reverts commit 440110b303.

ares_free_hostent.c

@@ -34,8 +34,7 @@ void ares_free_hostent(struct hostent *host)
   for (p = host->h_aliases; *p; p++)
     free(*p);
   free(host->h_aliases);
-  if (host->h_addr_list[0])
-    free(host->h_addr_list[0]); /* no matter if there is one or many entries,
+  free(host->h_addr_list[0]); /* no matter if there is one or many entries,
                                  there is only one malloc for all of them */
   free(host->h_addr_list);
   free(host);

ares_parse_aaaa_reply.c

@@ -239,12 +239,8 @@ int ares_parse_aaaa_reply(const unsigned char *abuf, int alen,
                   hostent->h_aliases = aliases;
                   hostent->h_addrtype = AF_INET6;
                   hostent->h_length = sizeof(struct ares_in6_addr);
-                  if (naddrs) {
-                    for (i = 0; i < naddrs; i++)
-                      hostent->h_addr_list[i] = (char *) &addrs[i];
-                  } else {
-                    free(addrs);
-                  }
+                  for (i = 0; i < naddrs; i++)
+                    hostent->h_addr_list[i] = (char *) &addrs[i];
                   hostent->h_addr_list[naddrs] = NULL;
                   if (!naddrs && addrs)
                     free(addrs);