Crash caused by InvRef:set_list(LISTNAME, nil) in allow* callbacks

[SmallJoker]

Minetest version

Version 5.7.0-dev baf99f8

Thread 19 "Server" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffb3fff640 (LWP 9688)]
0x0000555555b69a66 in IMoveAction::apply(InventoryManager*, ServerActiveObject*, IGameDef*) ()
(gdb) bt
#0  0x0000555555b69a66 in IMoveAction::apply(InventoryManager*, ServerActiveObject*, IGameDef*) ()
#1  0x000055555593b995 in Server::handleCommand_InventoryAction(NetworkPacket*) ()
#2  0x0000555555c123ac in Server::ProcessData(NetworkPacket*) ()
#3  0x0000555555c125a7 in Server::Receive() ()
#4  0x0000555555c26ef2 in ServerThread::run() ()

OS / Hardware

Linux x86_64

Summary

• put & take work flawlessly
• move segfaults (list name detached:PLAYERNAME_workbenchX where X is any of 3,4,5)

Steps to reproduce

1. https://github.com/cornernote/minetest-workbench/
2. Place a workbench
3. Open
4. Move items
5. Crash (sometimes it works due to overlapping memory areas)

For reference, #11882 very likely suffers from the same issue.