Add checks for null pointer / failed malloc to menu code

server/commands/menu_commands.c

@@ -120,6 +120,10 @@ menu_add_item_func(Client *c, int argc, char **argv)
 		/* We need to create it */
 		report(RPT_INFO, "Client [%d] is using the menu", c->sock);
 		c->menu = menu_create("_client_menu_", menu_commands_handler, c->name, c);
+		if (c->menu == NULL) {
+			sock_send_error(c->sock, "Cannot create menu\n");
+			return 1;
+		}
 		menu_add_item(main_menu, c->menu);
 	}