Crash after an Auto Light Curve process

Siril version: Master & 1.2.4

Note: please report against latest git master branch or latest stable version

Operating System: Windows (but any for sure)

Description of the bug

After a first successfull Automatic Light Curve process, and after changing the CWD and loading a sequence, the Auto LC window still exhibits the old comparison stars file name (and path). So, while lunching the next Aoto Light Curve process, this can lead to a crash.

Reproduction

• Load a seq.
• Perform an Auto Light Curve process (Photometry menu). Should be successfull.
• Change the CWD
• The Photometry/Automated Light Curve item of the menu is still is not sensitive anymore.
• Reload a seq (The Photometry/Automated Light Curve item gets back sensitive)
• Perform again an Auto Light Curve process. The former file is shown.
• If you click OK, Siril crashes

Reproduction steps:

…

Expected result: No crash

Additional checks were added in !746 (merged)