bug#45200: Memory leaks: (garbage-collect) fails to reclaim memory

[Eli Zaretskii]

> From: Konstantin Kharlamov <hi-angel@yandex.ru>
> Date: Sun, 24 Jan 2021 22:06:21 +0300
> Cc: 45200@debbugs.gnu.org
> 
> Case in point btw: after the previous weekend I found my Emacs instance that 
> I did not touch during the weekend to bloat to as much as 6xxMB. I think that 
> happened because the on-idle hook that I hooked garbage collector onto was 
> not run for 2 days, whilst Emacs might have been doing something like 
> communication to LSP server from time to time, so this is why it ended up 
> taking so much memory. I think it's needless to say that I had to restart 
> Emacs for the half-gigabyte of memory to get returned to my system.

That bug (bug#43389) was recently tracked down and fixed.  I don't
think it has anything to do with malloc_trim and friends.