/* No data should have been sent with the AUTH command */
-if (*data != 0) return UNEXPECTED;
+if (*data) return UNEXPECTED;
/* Send the challenge, read the return */
check that the remaining length is 32. */
auth_vars[0] = expand_nstring[1] = clear;
-while (*clear != 0 && !isspace(*clear)) clear++;
+while (*clear && !isspace(*clear)) clear++;
if (!isspace(*clear)) return FAIL;
*clear++ = 0;