Specify milliseconds in log

src/libckpool.c

@@ -784,7 +784,7 @@ int round_trip(char *url)
 			url, port, diff);
 		diff = 500;
 	}
-	LOGINFO("Minimum round trip to %s:%s calculated as %d", url, port, ret);
+	LOGINFO("Minimum round trip to %s:%s calculated as %dms", url, port, ret);
 out:
 	Close(sockd);
 	freeaddrinfo(p);

src/stratifier.c

@@ -5436,7 +5436,7 @@ static void *set_node_latency(void *arg)
 	pthread_detach(pthread_self());
 
 	client->latency = round_trip(client->address) / 2;
-	LOGNOTICE("Node client %"PRId64" %s latency set to %d", client->id,
+	LOGNOTICE("Node client %"PRId64" %s latency set to %dms", client->id,
 		  client->address, client->latency);
 	dec_instance_ref(client->sdata, client);
 	return NULL;