si should only be dealloced on shutdown

src/generator.c

@@ -192,7 +192,6 @@ static void kill_server(server_instance_t *si)
 	dealloc(cs->port);
 	dealloc(cs->auth);
 	dealloc(si->data);
-	dealloc(si);
 }
 
 static int gen_loop(proc_instance_t *pi)
@@ -1315,6 +1314,7 @@ static int server_mode(ckpool_t *ckp, proc_instance_t *pi)
 	for (i = 0; i < ckp->btcds; i++) {
 		si = ckp->servers[i];
 		kill_server(si);
+		dealloc(si);
 	}
 	dealloc(ckp->servers);
 	return ret;