SIGSEGV introduced recently on master when deleting an inset

[Jürgen Spitzmüller]

Am Sonntag, dem 07.04.2024 um 06:50 +0200 schrieb Jürgen Spitzmüller:
> Just doing a bisect.

73678dcde977802d5ff3ae07f0226484041fff48 is the first bad commit
commit 73678dcde977802d5ff3ae07f0226484041fff48
Author: Jean-Marc Lasgouttes 
Date:   Mon Nov 27 15:57:09 2023 +0100

    Avoid full metrics computation when entering/leaving inset
    
    Annotate function LFUN_FINISHED_xxx to indicate that they do not
    require a full metrics computation.
    
    Remove an "optimization" that meant that when the cursor changed
    inset, a full metrics computation was requested.
    
    Part of bug #12297


-- 
Jürgen