rem: shm_file = 0;
add: *shm_file = 0;
context: static inline int fifo_cbp(char** shm_file, char* response_file){	int fn_len;	if (response_file) {		fn_len = strlen(response_file) + 1;		*shm_file = shm_malloc(fn_len);		if (!*shm_file) {			fifo_uac_error(response_file, 500, "no shmem");			return -1;		}		memcpy(*shm_file, response_file, fn_len);	} else {		shm_file = 0;	}	return 0;}