rspamd core dumps with current luajit

[Russell L. Carter]

Hi,

A couple of days ago rspamd starting coredumping on
my three 12-stable servers on startup.  After two
days of intermittent tearing my hair out, I traced
it to the luajit port.  Reinstalling luajit fixes
the problem.

Hope this saves somebody else the annoyance.

Although I have regained much of my basic knowledge
of debugging coredumps with gdb, so there is that.

Cheers,
Russell