git: 89e3d5671ba1 - main - bsnmpclient(3): make it thread-safe

[Edward Tomasz Napierala]

On 1229T1511, Jessica Clarke wrote:

[..]

> Is there really a documented requirement for everything to be called
> from the same thread? I can see consumers of the library that already
> use proper locking breaking because of this.

I'm not aware of such requirement being documented; guess I was bit too
much fixated on the one use case this patch fixes.

Given that harti@ mentioned he's planning to get rid of global data,
and other problems pointed out here, I think it's best to just revert it.