Reverted wrong fix.

src/knot/server/xfr-handler.c

@@ -1277,12 +1277,9 @@ int xfr_answer(knot_nameserver_t *ns, knot_ns_xfr_t *xfr)
 	}
 	
 	int ret = knot_ns_init_xfr(ns, xfr);
-	if (ret != KNOT_EOK) {
-		return ret;
-	}
 
 	int xfr_failed = (ret != KNOT_EOK);
-	const char * errstr = knot_strerror(ret);
+	const char *errstr = knot_strerror(ret);
 	
 	// use the QNAME as the zone name to get names also for
 	// zones that are not in the server