[BUG]nil pointer dereference when EnableFontSubsetting un unused compositeFont

[sify21]

Description

When EnableFontSubsetting un unused compositeFont, the program panics with a nil pointer dereference, which causes the program shutdown.

Expected Behavior

ignore an enabled font that is not used

Actual Behavior

Steps to reproduce the behavior:

1. create multiple fonts with model.NewCompositePdfFontFromTTF
2. enable them with (*Creator).EnableFontSubsetting
3. use one of the fonts, but not all of them
4. See error

[github-actions]

Welcome! Thanks for posting your first issue. The way things work here is that while customer issues are prioritized, other issues go into our backlog where they are assessed and fitted into the roadmap when suitable. If you need to get this done, consider buying a license which also enables you to use it in your commercial products. More information can be found on https://unidoc.io/

[gunnsth]

@sify21 Thanks for submitting the problem. Can you please attach all the files and code needed to reproduce the case?

[sify21]

@gunnsth It's here

[3ace]

@sify21 This issue should be fixed on the latest UniPDF v3.22.0

[sify21]

Confirm it's fixed