addauth command does not work in cli_mt/cli_st

I can not operation a node with ACL by "addauth" when using cli_st. I have fixed this bug:
original：else if (startsWith(line, "addauth ")) {
char *ptr;
line += 8;
ptr = strchr(line, ' ');
if (ptr)

zoo_add_auth(zh, line, ptr, ptr ? strlen(ptr) -1 : 0, NULL, NULL);
now: zoo_add_auth(zh, line, ptr, ptr ? strlen(ptr) : 0, NULL, NULL);
strlen(ptr) is just ok.