Use new lookup function

Author: neithernut

pam_e4crypt.c

@@ -685,8 +685,8 @@ pam_sm_open_session(
  if (option = get_modarg_value("keyring", argv[i])) {
  // A keyring option may have been passed. If so, we try to retrieve
  // the key.
- keyring = request_key("keyring", option, NULL, 0);
- if (keyring > 0)
+ keyring = parse_keyring(option);
+ if (keyring != 0)
  continue;
 
  pam_log(LOG_ERR,