Use ns_g_server->recursionquota instead of client->recursionquota

as the later will be NULL on ISC_R_QUOTA.

*** CID 306732:  Null pointer dereferences  (FORWARD_NULL)
/bin/named/query.c: 4359 in query_recurse()
4353     			static _Atomic(isc_stdtime_t) last = 0;
4354     #else
4355     			static isc_stdtime_t last = 0;
4356     #endif
4357     			isc_stdtime_t now;
4358     			isc_stdtime_get(&now);
   CID 306732:  Null pointer dereferences  (FORWARD_NULL)
   Passing "client" to "log_quota", which dereferences null "client->recursionquota".
4359     			log_quota(client, &last, now,
4360     				  "no more recursive clients (%d/%d/%d): %s",
4361     				  isc_result_totext(result));
4362     			ns_client_killoldestquery(client);
4363     		}
4364     		if (result == ISC_R_SUCCESS && !client->mortal &&