Fix confusion between disk and CPU RAM

src/datawizard/copy_driver.c

@@ -870,9 +870,10 @@ void _starpu_driver_wait_request_completion(struct _starpu_async_channel *async_
                 _starpu_mpi_common_wait_event(async_channel);
                 break;
 #endif
-	case STARPU_CPU_RAM:
+	case STARPU_DISK_RAM:
 		starpu_disk_wait_request(async_channel);
 		break;
+	case STARPU_CPU_RAM:
 	default:
 		STARPU_ABORT();
 	}