Forgottenserver: Crash when reload

[infernumx]

Before creating an issue, please ensure:

• [X] This is a bug in the software that resides in this repository, and not a
  support matter (use https://otland.net/forums/support.16/ for support)
• [X] This issue is reproducible without changes to the code in this repository

Steps to reproduce (include any configuration/script required to reproduce)

1. Log on to an admin character
2. Try to /reload any reload type
3. Crash

Expected behaviour

It should reload.

Actual behaviour

It crashes.

Running VS Debugger shows me the error is in LuaScriptInterface::luaDeleteAction
The exception is:
Exception thrown: read access violation. *(*(__imp_lua_touserdata(...))) was nullptr.

[raymondtfr]

2566