Fix: Undefined first and last name when a user updates their user profile

[kimhornung]

When a user saves their profile and WP debug is enabled, warnings about undefined variables appear in the debug.log file.

Furthermore, I think this issue might cause the first name and last name to be set to an empty string in SCORM (but I don't have access to our SCROM instance, so I could not check this - it might ignore the empty values).

Steps to reproduce

1. Add the following lines to wp-config.php to enable WP debug

define('WP_DEBUG', true);
define('WP_DEBUG_DISPLAY', false);
define('WP_DEBUG_LOG', true);

2. In the backend go to Users > Profile

3. Make sure the First Name and Last Name fields are not blank

4. Save your user details

Result:
The following warnings appears in the /wp-content/debug.log file:

[08-Nov-2022 16:03:38 UTC] PHP Notice:  Undefined variable: user_first_name in <webroot>/scormcloud/scormcloudcontenthandler.php on line 225
[08-Nov-2022 16:03:39 UTC] PHP Notice:  Undefined variable: user_last_name in <webroot>/scormcloud/scormcloudcontenthandler.php on line 226